979975998 has 12 divisors (see below), whose sum is σ = 2123281368. Its totient is φ = 326658660.

The previous prime is 979975981. The next prime is 979976003. The reversal of 979975998 is 899579979.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27221538 + ... + 27221573.

It is an arithmetic number, because the mean of its divisors is an integer number (176940114).

Almost surely, 2^979975998 is an apocalyptic number.

979975998 is an abundant number, since it is smaller than the sum of its proper divisors (1143305370).

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

979975998 is a wasteful number, since it uses less digits than its factorization.

979975998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54443119 (or 54443116 counting only the distinct ones).

The product of its digits is 115736040, while the sum is 72.

The square root of 979975998 is about 31304.5683247669. The cubic root of 979975998 is about 993.2802791607.

The spelling of 979975998 in words is "nine hundred seventy-nine million, nine hundred seventy-five thousand, nine hundred ninety-eight".