390064956 has 12 divisors (see below), whose sum is σ = 910151592. Its totient is φ = 130021648.

The previous prime is 390064951. The next prime is 390064957. The reversal of 390064956 is 659460093.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390064951) 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, 16252695 + ... + 16252718.

It is an arithmetic number, because the mean of its divisors is an integer number (75845966).

Almost surely, 2^390064956 is an apocalyptic number.

It is an amenable number.

390064956 is an abundant number, since it is smaller than the sum of its proper divisors (520086636).

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

390064956 is a wasteful number, since it uses less digits than its factorization.

390064956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32505420 (or 32505418 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 390064956 is about 19750.0621771173. The cubic root of 390064956 is about 730.6549173650.

The spelling of 390064956 in words is "three hundred ninety million, sixty-four thousand, nine hundred fifty-six".