79931379 has 16 divisors (see below), whose sum is σ = 116426880. Its totient is φ = 48375360.

The previous prime is 79931339. The next prime is 79931419. The reversal of 79931379 is 97313997.

It is an interprime number because it is at equal distance from previous prime (79931339) and next prime (79931419).

It is not a de Polignac number, because 79931379 - 2¹³ = 79923187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79931329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32439 + ... + 34815.

It is an arithmetic number, because the mean of its divisors is an integer number (7276680).

Almost surely, 2^79931379 is an apocalyptic number.

79931379 is a deficient number, since it is larger than the sum of its proper divisors (36495501).

79931379 is a wasteful number, since it uses less digits than its factorization.

79931379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410.

The product of its digits is 321489, while the sum is 48.

The square root of 79931379 is about 8940.4350565283. The cubic root of 79931379 is about 430.7637032119.

The spelling of 79931379 in words is "seventy-nine million, nine hundred thirty-one thousand, three hundred seventy-nine".