39390544 has 20 divisors (see below), whose sum is σ = 76712724. Its totient is φ = 19593728.

The previous prime is 39390539. The next prime is 39390563. The reversal of 39390544 is 44509393.

It can be written as a sum of positive squares in 2 ways, for example, as 32035600 + 7354944 = 5660^2 + 2712^2 .

It is a super-2 number, since 2×39390544² = 3103229913231872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3097 + ... + 9400.

Almost surely, 2^39390544 is an apocalyptic number.

It is an amenable number.

39390544 is a deficient number, since it is larger than the sum of its proper divisors (37322180).

39390544 is a wasteful number, since it uses less digits than its factorization.

39390544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12702 (or 12696 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 39390544 is about 6276.1886523590. The cubic root of 39390544 is about 340.2493672341.

The spelling of 39390544 in words is "thirty-nine million, three hundred ninety thousand, five hundred forty-four".