44425138 has 4 divisors (see below), whose sum is σ = 66637710. Its totient is φ = 22212568.

The previous prime is 44425133. The next prime is 44425163. The reversal of 44425138 is 83152444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26759929 + 17665209 = 5173^2 + 4203^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (44425133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106283 + ... + 11106286.

Almost surely, 2^44425138 is an apocalyptic number.

44425138 is a deficient number, since it is larger than the sum of its proper divisors (22212572).

44425138 is a wasteful number, since it uses less digits than its factorization.

44425138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212571.

The product of its digits is 15360, while the sum is 31.

The square root of 44425138 is about 6665.2185260500. The cubic root of 44425138 is about 354.1682252357.

The spelling of 44425138 in words is "forty-four million, four hundred twenty-five thousand, one hundred thirty-eight".