390564692 has 36 divisors (see below), whose sum is σ = 822506580. Its totient is φ = 161610624.

The previous prime is 390564683. The next prime is 390564781. The reversal of 390564692 is 296465093.

It can be written as a sum of positive squares in 2 ways, for example, as 181010116 + 209554576 = 13454^2 + 14476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28673 + ... + 40040.

It is an arithmetic number, because the mean of its divisors is an integer number (22847405).

Almost surely, 2^390564692 is an apocalyptic number.

It is an amenable number.

390564692 is an abundant number, since it is smaller than the sum of its proper divisors (431941888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390564692 is a wasteful number, since it uses less digits than its factorization.

390564692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68760 (or 68751 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 390564692 is about 19762.7096320317. The cubic root of 390564692 is about 730.9668130625.

The spelling of 390564692 in words is "three hundred ninety million, five hundred sixty-four thousand, six hundred ninety-two".