79885431 has 12 divisors (see below), whose sum is σ = 122177952. Its totient is φ = 50124096.

The previous prime is 79885427. The next prime is 79885439. The reversal of 79885431 is 13458897.

It is not a de Polignac number, because 79885431 - 2² = 79885427 is a prime.

It is a super-2 number, since 2×79885431² = 12763364172111522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79885439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260911 + ... + 261216.

It is an arithmetic number, because the mean of its divisors is an integer number (10181496).

Almost surely, 2^79885431 is an apocalyptic number.

79885431 is a deficient number, since it is larger than the sum of its proper divisors (42292521).

79885431 is a wasteful number, since it uses less digits than its factorization.

79885431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522150 (or 522147 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 79885431 is about 8937.8650135253. The cubic root of 79885431 is about 430.6811468797.

The spelling of 79885431 in words is "seventy-nine million, eight hundred eighty-five thousand, four hundred thirty-one".