44239013 has 24 divisors (see below), whose sum is σ = 56948472. Its totient is φ = 34038144.

The previous prime is 44238991. The next prime is 44239021. The reversal of 44239013 is 31093244.

It can be written as a sum of positive squares in 4 ways, for example, as 9746884 + 34492129 = 3122^2 + 5873^2 .

It is not a de Polignac number, because 44239013 - 2²⁰ = 43190437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44239033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22631 + ... + 24507.

It is an arithmetic number, because the mean of its divisors is an integer number (2372853).

Almost surely, 2^44239013 is an apocalyptic number.

It is an amenable number.

44239013 is a deficient number, since it is larger than the sum of its proper divisors (12709459).

44239013 is a wasteful number, since it uses less digits than its factorization.

44239013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 44239013 is about 6651.2414630654. The cubic root of 44239013 is about 353.6729213129.

The spelling of 44239013 in words is "forty-four million, two hundred thirty-nine thousand, thirteen".