872379657 has 12 divisors (see below), whose sum is σ = 1289409264. Its totient is φ = 568060920.

The previous prime is 872379617. The next prime is 872379671. The reversal of 872379657 is 756973278.

It is not a de Polignac number, because 872379657 - 2²⁴ = 855602441 is a prime.

It is a super-2 number, since 2×872379657² = 1522092531894875298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872379617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1126719 + ... + 1127492.

It is an arithmetic number, because the mean of its divisors is an integer number (107450772).

Almost surely, 2^872379657 is an apocalyptic number.

It is an amenable number.

872379657 is a deficient number, since it is larger than the sum of its proper divisors (417029607).

872379657 is a wasteful number, since it uses less digits than its factorization.

872379657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254260 (or 2254257 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 872379657 is about 29536.0738250703. The cubic root of 872379657 is about 955.5098679922.

The spelling of 872379657 in words is "eight hundred seventy-two million, three hundred seventy-nine thousand, six hundred fifty-seven".