979868239 has 18 divisors (see below), whose sum is σ = 1149199800. Its totient is φ = 833030352.

The previous prime is 979868221. The next prime is 979868261. The reversal of 979868239 is 932868979.

It is a happy number.

It is not a de Polignac number, because 979868239 - 2¹⁷ = 979737167 is a prime.

It is a super-2 number, since 2×979868239² = 1920283531601922242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979868039) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3090909 + ... + 3091225.

Almost surely, 2^979868239 is an apocalyptic number.

979868239 is a deficient number, since it is larger than the sum of its proper divisors (169331561).

979868239 is an equidigital number, since it uses as much as digits as its factorization.

979868239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 523 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The square root of 979868239 is about 31302.8471388786. The cubic root of 979868239 is about 993.2438705095.

The spelling of 979868239 in words is "nine hundred seventy-nine million, eight hundred sixty-eight thousand, two hundred thirty-nine".