396978980928 has 56 divisors (see below), whose sum is σ = 1050777090720. Its totient is φ = 132271288320.

The previous prime is 396978980927. The next prime is 396978980953. The reversal of 396978980928 is 829089879693.

It is a super-2 number, since 2×396978980928² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (396978980927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34128 + ... + 891696.

It is an arithmetic number, because the mean of its divisors is an integer number (18763876620).

Almost surely, 2^396978980928 is an apocalyptic number.

It is an amenable number.

396978980928 is an abundant number, since it is smaller than the sum of its proper divisors (653798109792).

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

396978980928 is a wasteful number, since it uses less digits than its factorization.

396978980928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859995 (or 859985 counting only the distinct ones).

The product of its (nonzero) digits is 846526464, while the sum is 78.

The spelling of 396978980928 in words is "three hundred ninety-six billion, nine hundred seventy-eight million, nine hundred eighty thousand, nine hundred twenty-eight".