397931585808 has 80 divisors (see below), whose sum is σ = 1107287986176. Its totient is φ = 122783928960.

The previous prime is 397931585767. The next prime is 397931585873. The reversal of 397931585808 is 808585139793.

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, 5779410 + ... + 5847857.

Almost surely, 2^397931585808 is an apocalyptic number.

It is an amenable number.

397931585808 is an abundant number, since it is smaller than the sum of its proper divisors (709356400368).

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

397931585808 is a wasteful number, since it uses less digits than its factorization.

397931585808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627332 (or 11627326 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 66.

The spelling of 397931585808 in words is "three hundred ninety-seven billion, nine hundred thirty-one million, five hundred eighty-five thousand, eight hundred eight".