979807128 has 32 divisors (see below), whose sum is σ = 2458190400. Its totient is φ = 325446048.

The previous prime is 979807117. The next prime is 979807133. The reversal of 979807128 is 821708979.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65338 + ... + 78921.

It is an arithmetic number, because the mean of its divisors is an integer number (76818450).

Almost surely, 2^979807128 is an apocalyptic number.

It is an amenable number.

979807128 is an abundant number, since it is smaller than the sum of its proper divisors (1478383272).

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

979807128 is a wasteful number, since it uses less digits than its factorization.

979807128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144551 (or 144547 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 979807128 is about 31301.8709983924. The cubic root of 979807128 is about 993.2232216829.

The spelling of 979807128 in words is "nine hundred seventy-nine million, eight hundred seven thousand, one hundred twenty-eight".