879726978 has 24 divisors (see below), whose sum is σ = 2052696828. Its totient is φ = 270685152.

The previous prime is 879726893. The next prime is 879726983. The reversal of 879726978 is 879627978.

It can be written as a sum of positive squares in 2 ways, for example, as 665485209 + 214241769 = 25797^2 + 14637^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879525 + ... + 1879992.

Almost surely, 2^879726978 is an apocalyptic number.

879726978 is an abundant number, since it is smaller than the sum of its proper divisors (1172969850).

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

879726978 is a wasteful number, since it uses less digits than its factorization.

879726978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759538 (or 3759535 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The square root of 879726978 is about 29660.1918065275. The cubic root of 879726978 is about 958.1848579018.

The spelling of 879726978 in words is "eight hundred seventy-nine million, seven hundred twenty-six thousand, nine hundred seventy-eight".