79331157 has 20 divisors (see below), whose sum is σ = 119692716. Its totient is φ = 52358400.

The previous prime is 79331123. The next prime is 79331167. The reversal of 79331157 is 75113397.

It can be written as a sum of positive squares in 2 ways, for example, as 46049796 + 33281361 = 6786^2 + 5769^2 .

It is not a de Polignac number, because 79331157 - 2⁶ = 79331093 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79331167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3333 + ... + 13029.

Almost surely, 2^79331157 is an apocalyptic number.

It is an amenable number.

79331157 is a deficient number, since it is larger than the sum of its proper divisors (40361559).

79331157 is a wasteful number, since it uses less digits than its factorization.

79331157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810 (or 9801 counting only the distinct ones).

The product of its digits is 19845, while the sum is 36.

The square root of 79331157 is about 8906.8039722450. The cubic root of 79331157 is about 429.6827604202.

The spelling of 79331157 in words is "seventy-nine million, three hundred thirty-one thousand, one hundred fifty-seven".