44138912 has 24 divisors (see below), whose sum is σ = 87177636. Its totient is φ = 21998592.

The previous prime is 44138911. The next prime is 44138917. The reversal of 44138912 is 21983144.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42981136 + 1157776 = 6556^2 + 1076^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8738 + ... + 12830.

Almost surely, 2^44138912 is an apocalyptic number.

It is an amenable number.

44138912 is a deficient number, since it is larger than the sum of its proper divisors (43038724).

44138912 is a wasteful number, since it uses less digits than its factorization.

44138912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440 (or 4432 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 44138912 is about 6643.7122153206. The cubic root of 44138912 is about 353.4059642629.

The spelling of 44138912 in words is "forty-four million, one hundred thirty-eight thousand, nine hundred twelve".