The name Ahijah in Hebrew letters is אחיה. Below: how its number adds up, which page of the Torah it falls on and what verse stands there. Everything is computed, nothing is guessed.
אחיה
In short
Your name in Hebrew letters is אחיה. A Tanakh name: the name of nine Israelites (first in 1 Samuel 14:3; 24 mentions in the Tanakh). Meaning, per Strong’s dictionary (1890): “brother of God”. Adding up the numbers of its letters gives 24 — the same as the Torah word חוי, “Hivite”. That number points to Torah page 24 of 354 — in the portion Lech Lecha. What that portion is about: “Go forth”: Abraham leaves Haran; the promise of land and offspring; the covenant between the pieces; circumcision. The verse that begins with the first letter of your name and ends with the last is Genesis 13:4. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Ahijah” — this exact spelling is what was calculated: אחיה. A name from the Tanakh — its Tanakh spelling is used. If your name is spelled differently, correct the Hebrew spelling and the report is recomputed.
Adding up the letters of the name אחיה gives 24.
24
The number 24 is the Torah word חוי — «Hivite» (Genesis 10:17).
And G-d said unto Abraham: 'As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be.
This is from the portion Lech Lecha. What it is about: “Go forth”: Abraham leaves Haran; the promise of land and offspring; the covenant between the pieces; circumcision.
Other ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
with finals and ordinal — 24. A Torah word with the same number is חוי — “Hivite” (Genesis 10:17).
Reduced, each letter to one digit (mispar katan) — 15. A Torah word with the same number is זוב — “to flow” (Exodus 3:8).
Cumulative: a letter plus all letters before it (mispar kidmi) — 107. A Torah word with the same number is גלעד — “Gilead, region east of Jordan” (Genesis 31:21).
Squares of the letter values (mispar perati) — 190. A Torah word with the same number is כנען — “Canaan, son of Ham” (Genesis 9:18).
Building: the sum grows with each letter (mispar bone’eh) — 53. A Torah word with the same number is אבן — “stone” (Genesis 2:12).
The letters that come out are תסמצ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 590. A Torah word with the same number is שרץ — “swarming creatures” (Genesis 1:20).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 555. A Torah word with the same number is הנשר — “the eagle” (Leviticus 11:13).
The number 24 appears in the classical books 19 times across 15 works. The earliest mention is ספר חסידים (~1200).
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, day 861 of your life (±1), the psalm by age, the attestations from the classical books — a PDF sent to your email.
The number of the day, every morning
Every date has a number too. Once a year it will match the number of your name — 24. The channel posts one number a day, one verse and the Torah page it lands on. Nothing after it, no mailing list.
Hebrew is written from right to left. אחיה has 4 letters: א Alef, ח Chet, י Yod, ה He. The first letter is Alef, the last is He.
For an engraving, a sign or a tattoo, show the spelling to someone who reads Hebrew: transliterating a name is a choice, not the only option.
The name אחיה appears in the Torah as a word 2 times. The first time is Genesis 24:55.
The verse of your name
There is a custom: at the end of the prayer one says a Torah verse that begins with the first letter of one's name and ends with its last. For אחיה these are א and ה. The Pentateuch has 49 such verses. The first of them is Genesis 13:4:
אל מקום המזבח אשר עשה שם בראשנה ויקרא שם אברם בשם ה׳
This is from the portion Lech Lecha. What it is about: “Go forth”: Abraham leaves Haran; the promise of land and offspring; the covenant between the pieces; circumcision.
Each Hebrew letter has a number; a word's number is their sum (alef 1 … tav 400). The page is the remainder modulo 354: the Torah divided into 354 pages of 861 letters, as the lunar year has 354 days. Everything can be checked by hand.