390086564 has 12 divisors (see below), whose sum is σ = 780173184. Its totient is φ = 167179944.

The previous prime is 390086563. The next prime is 390086591. The reversal of 390086564 is 465680093.

390086564 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (390086563) 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, 6965804 + ... + 6965859.

It is an arithmetic number, because the mean of its divisors is an integer number (65014432).

Almost surely, 2^390086564 is an apocalyptic number.

It is an amenable number.

390086564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

390086564 is a wasteful number, since it uses less digits than its factorization.

390086564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13931674 (or 13931672 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 390086564 is about 19750.6092057941. The cubic root of 390086564 is about 730.6684088785.

The spelling of 390086564 in words is "three hundred ninety million, eighty-six thousand, five hundred sixty-four".