בְּהֵמוֹת Behemot
Every verse in which this word stands — 1 place, in canonical order, first appearance to last. These are the places the lexicon carries under this word's own entry, counting every form the text writes it in, which is the number on the list.
Iyov 40:15, and only there — 'behold now Behemot, which I made with you; he eats grass like the ox.' The form is the plural of the common behemah, but the passage speaks of one creature, 'the first of the ways of God,' and the tradition reads the land's counterpart to Leviathan; the naturalists have suggested the hippopotamus. The common behemah has its own row among the collective terms.
הִנֵּה־נָא בְהֵמוֹת אֲשֶׁר־עָשִׂיתִי עִמָּךְ חָצִיר כַּבָּקָר יֹאכֵֽל
Behold now behemoth, which I made with thee; He eateth grass as an ox.
Quick answers
What is the Hebrew word for behemot?
Behemot in Hebrew is בהמות, with a gematria of 453 in the standard method.
How many times is the behemot mentioned in the Tanakh?
The word stands 1 time in the Tanakh, first at Job 40:15.
A spelling is not a word. The bare letters בהמות stand 11 times in the corpus, which is a different question and often a different number: the same letters can spell a name or another word entirely, and the creature written with a particle attached is a spelling that search never returns. It is here, as itself.
See all 11 occurrences of the spelling בהמות →