390982172 has 18 divisors (see below), whose sum is σ = 795928392. Its totient is φ = 167563704.

The previous prime is 390982169. The next prime is 390982177. The reversal of 390982172 is 271289093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390982177) 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, 997208 + ... + 997599.

It is an arithmetic number, because the mean of its divisors is an integer number (44218244).

Almost surely, 2^390982172 is an apocalyptic number.

It is an amenable number.

390982172 is an abundant number, since it is smaller than the sum of its proper divisors (404946220).

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

390982172 is a wasteful number, since it uses less digits than its factorization.

390982172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994825 (or 1994816 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 390982172 is about 19773.2691277897. The cubic root of 390982172 is about 731.2271671640.

The spelling of 390982172 in words is "three hundred ninety million, nine hundred eighty-two thousand, one hundred seventy-two".