397662876 has 72 divisors (see below), whose sum is σ = 1090493040. Its totient is φ = 121457664.

The previous prime is 397662871. The next prime is 397662887. The reversal of 397662876 is 678266793.

397662876 is a `hidden beast` number, since 3 + 9 + 7 + 6 + 628 + 7 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397662871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61996 + ... + 68108.

Almost surely, 2^397662876 is an apocalyptic number.

397662876 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397662876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545246520).

397662876 is an abundant number, since it is smaller than the sum of its proper divisors (692830164).

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

397662876 is a wasteful number, since it uses less digits than its factorization.

397662876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275 (or 6270 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 397662876 is about 19941.4863036836. The cubic root of 397662876 is about 735.3684893919.

The spelling of 397662876 in words is "three hundred ninety-seven million, six hundred sixty-two thousand, eight hundred seventy-six".