79931166 has 16 divisors (see below), whose sum is σ = 182699904. Its totient is φ = 22837464.

The previous prime is 79931153. The next prime is 79931191. The reversal of 79931166 is 66113997.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1903123 = 79931166 / (7 + 9 + 9 + 3 + 1 + 1 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951520 + ... + 951603.

It is an arithmetic number, because the mean of its divisors is an integer number (11418744).

Almost surely, 2^79931166 is an apocalyptic number.

79931166 is an abundant number, since it is smaller than the sum of its proper divisors (102768738).

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

79931166 is a wasteful number, since it uses less digits than its factorization.

79931166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903135.

The product of its digits is 61236, while the sum is 42.

The square root of 79931166 is about 8940.4231443484. The cubic root of 79931166 is about 430.7633205805.

The spelling of 79931166 in words is "seventy-nine million, nine hundred thirty-one thousand, one hundred sixty-six".