In Hebrew each letter possesses a numerical value. Gematria is the substitution of numeric values in the Hebrew Alphabet. The number 9 is the signature of Ashem.

In Gematria Truth (Emet) is 400+40+1=441 (4+4+1=9)

Adam is also 9. If you add all numbers from 1 to 9 = 45

And 4+5=9