In the following number, replace $*$ by a digit to make the number divisible by $9$:

 $379*4$

In the following number, replace $*$ by a digit to make the number divisible by $9$: 

$*8768$

Write the prime factorization of the following number.

$39$

Write the prime factorization of the following number.

$42$

Write the prime factorization of the following number.

$45$

Write the prime factorization of the following number.

$52$