390517884972 has 18 divisors (see below), whose sum is σ = 987142431548. Its totient is φ = 130172628312.

The previous prime is 390517884931. The next prime is 390517884973. The reversal of 390517884972 is 279488715093.

390517884972 is a `hidden beast` number, since 3 + 9 + 0 + 517 + 8 + 8 + 49 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (390517884973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5423859478 + ... + 5423859549.

Almost surely, 2^390517884972 is an apocalyptic number.

It is an amenable number.

390517884972 is an abundant number, since it is smaller than the sum of its proper divisors (596624546576).

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

390517884972 is a wasteful number, since it uses less digits than its factorization.

390517884972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847719037 (or 10847719032 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 390517884972 in words is "three hundred ninety billion, five hundred seventeen million, eight hundred eighty-four thousand, nine hundred seventy-two".