390384957 has 24 divisors (see below), whose sum is σ = 577002816. Its totient is φ = 234285568.

The previous prime is 390384941. The next prime is 390384971. The reversal of 390384957 is 759483093.

It is not a de Polignac number, because 390384957 - 2⁴ = 390384941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390384977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10153 + ... + 29729.

It is an arithmetic number, because the mean of its divisors is an integer number (24041784).

Almost surely, 2^390384957 is an apocalyptic number.

It is an amenable number.

390384957 is a deficient number, since it is larger than the sum of its proper divisors (186617859).

390384957 is a wasteful number, since it uses less digits than its factorization.

390384957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637 (or 19620 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 390384957 is about 19758.1617819067. The cubic root of 390384957 is about 730.8546673400.

The spelling of 390384957 in words is "three hundred ninety million, three hundred eighty-four thousand, nine hundred fifty-seven".