79797231 has 10 divisors (see below), whose sum is σ = 119203392. Its totient is φ = 53198100.

The previous prime is 79797229. The next prime is 79797233. The reversal of 79797231 is 13279797.

It is an interprime number because it is at equal distance from previous prime (79797229) and next prime (79797233).

It is not a de Polignac number, because 79797231 - 2¹ = 79797229 is a prime.

It is a super-2 number, since 2×79797231² = 12735196150534722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79797233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 492495 + ... + 492656.

Almost surely, 2^79797231 is an apocalyptic number.

79797231 is a deficient number, since it is larger than the sum of its proper divisors (39406161).

79797231 is an equidigital number, since it uses as much as digits as its factorization.

79797231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985163 (or 985154 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 79797231 is about 8932.9295866474. The cubic root of 79797231 is about 430.5225861962.

The spelling of 79797231 in words is "seventy-nine million, seven hundred ninety-seven thousand, two hundred thirty-one".