390331156 has 6 divisors (see below), whose sum is σ = 683079530. Its totient is φ = 195165576.

The previous prime is 390331141. The next prime is 390331163. The reversal of 390331156 is 651133093.

It can be written as a sum of positive squares in only one way, i.e., 232074756 + 158256400 = 15234^2 + 12580^2 .

It is a super-3 number, since 3×390331156³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48791391 + ... + 48791398.

Almost surely, 2^390331156 is an apocalyptic number.

It is an amenable number.

390331156 is a deficient number, since it is larger than the sum of its proper divisors (292748374).

390331156 is a wasteful number, since it uses less digits than its factorization.

390331156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97582793 (or 97582791 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 390331156 is about 19756.8002470036. The cubic root of 390331156 is about 730.8210914916.

The spelling of 390331156 in words is "three hundred ninety million, three hundred thirty-one thousand, one hundred fifty-six".