44390439 has 6 divisors (see below), whose sum is σ = 64119536. Its totient is φ = 29593620.

The previous prime is 44390429. The next prime is 44390447. The reversal of 44390439 is 93409344.

It is not a de Polignac number, because 44390439 - 2⁹ = 44389927 is a prime.

It is a super-2 number, since 2×44390439² = 3941022149225442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44390429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2466127 + ... + 2466144.

Almost surely, 2^44390439 is an apocalyptic number.

44390439 is a deficient number, since it is larger than the sum of its proper divisors (19729097).

44390439 is a wasteful number, since it uses less digits than its factorization.

44390439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932277 (or 4932274 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 44390439 is about 6662.6150271496. The cubic root of 44390439 is about 354.0759915382.

The spelling of 44390439 in words is "forty-four million, three hundred ninety thousand, four hundred thirty-nine".