979888231 has 16 divisors (see below), whose sum is σ = 1145390400. Its totient is φ = 837947040.

The previous prime is 979888229. The next prime is 979888237. The reversal of 979888231 is 132888979.

It is not a de Polignac number, because 979888231 - 2¹ = 979888229 is a prime.

It is a super-2 number, since 2×979888231² = 1920361890504618722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979888237) 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, 155025 + ... + 161221.

It is an arithmetic number, because the mean of its divisors is an integer number (71586900).

Almost surely, 2^979888231 is an apocalyptic number.

979888231 is a deficient number, since it is larger than the sum of its proper divisors (165502169).

979888231 is an equidigital number, since it uses as much as digits as its factorization.

979888231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6679 (or 6665 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 55.

The square root of 979888231 is about 31303.1664692248. The cubic root of 979888231 is about 993.2506254300.

The spelling of 979888231 in words is "nine hundred seventy-nine million, eight hundred eighty-eight thousand, two hundred thirty-one".