396976530 has 32 divisors (see below), whose sum is σ = 953316288. Its totient is φ = 105796800.

The previous prime is 396976513. The next prime is 396976553. The reversal of 396976530 is 35679693.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 396976530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68340 + ... + 73920.

It is an arithmetic number, because the mean of its divisors is an integer number (29791134).

Almost surely, 2^396976530 is an apocalyptic number.

396976530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

396976530 is an abundant number, since it is smaller than the sum of its proper divisors (556339758).

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

396976530 is a wasteful number, since it uses less digits than its factorization.

396976530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962.

The product of its (nonzero) digits is 918540, while the sum is 48.

The square root of 396976530 is about 19924.2698736993. The cubic root of 396976530 is about 734.9451761597.

The spelling of 396976530 in words is "three hundred ninety-six million, nine hundred seventy-six thousand, five hundred thirty".