979988172 has 24 divisors (see below), whose sum is σ = 2288761776. Its totient is φ = 326359488.

The previous prime is 979988159. The next prime is 979988201. The reversal of 979988172 is 271889979.

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, 24243 + ... + 50474.

It is an arithmetic number, because the mean of its divisors is an integer number (95365074).

Almost surely, 2^979988172 is an apocalyptic number.

It is an amenable number.

979988172 is an abundant number, since it is smaller than the sum of its proper divisors (1308773604).

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

979988172 is a wasteful number, since it uses less digits than its factorization.

979988172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75817 (or 75815 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 60.

The square root of 979988172 is about 31304.7627686268. The cubic root of 979988172 is about 993.2843922356.

The spelling of 979988172 in words is "nine hundred seventy-nine million, nine hundred eighty-eight thousand, one hundred seventy-two".