979172808 has 64 divisors (see below), whose sum is σ = 2505461760. Its totient is φ = 318751296.

The previous prime is 979172801. The next prime is 979172869. The reversal of 979172808 is 808271979.

It is not an unprimeable number, because it can be changed into a prime (979172801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887185 + ... + 888287.

It is an arithmetic number, because the mean of its divisors is an integer number (39147840).

Almost surely, 2^979172808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979172808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252730880).

979172808 is an abundant number, since it is smaller than the sum of its proper divisors (1526288952).

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

979172808 is a wasteful number, since it uses less digits than its factorization.

979172808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1942 counting only the distinct ones).

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

The square root of 979172808 is about 31291.7370562901. The cubic root of 979172808 is about 993.0088402528.

The spelling of 979172808 in words is "nine hundred seventy-nine million, one hundred seventy-two thousand, eight hundred eight".