397379179976 has 32 divisors (see below), whose sum is σ = 770954916600. Its totient is φ = 191794337280.

The previous prime is 397379179949. The next prime is 397379179987. The reversal of 397379179976 is 679971973793.

It can be written as a sum of positive squares in 4 ways, for example, as 397245315076 + 133864900 = 630274^2 + 11570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 397379179897 and 397379179906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831956 + ... + 1219388.

Almost surely, 2^397379179976 is an apocalyptic number.

It is an amenable number.

397379179976 is a deficient number, since it is larger than the sum of its proper divisors (373575736624).

397379179976 is a wasteful number, since it uses less digits than its factorization.

397379179976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391889 (or 391885 counting only the distinct ones).

The product of its digits is 850659894, while the sum is 77.

The spelling of 397379179976 in words is "three hundred ninety-seven billion, three hundred seventy-nine million, one hundred seventy-nine thousand, nine hundred seventy-six".