79145913 has 32 divisors (see below), whose sum is σ = 133263360. Its totient is φ = 40584960.

The previous prime is 79145909. The next prime is 79145917. The reversal of 79145913 is 31954197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79145909) and next prime (79145917).

It is not a de Polignac number, because 79145913 - 2² = 79145909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79145917) 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 31 ways as a sum of consecutive naturals, for example, 16081 + ... + 20417.

It is an arithmetic number, because the mean of its divisors is an integer number (4164480).

Almost surely, 2^79145913 is an apocalyptic number.

It is an amenable number.

79145913 is a deficient number, since it is larger than the sum of its proper divisors (54117447).

79145913 is a wasteful number, since it uses less digits than its factorization.

79145913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437.

The product of its digits is 34020, while the sum is 39.

The square root of 79145913 is about 8896.3988781979. The cubic root of 79145913 is about 429.3480529692.

The spelling of 79145913 in words is "seventy-nine million, one hundred forty-five thousand, nine hundred thirteen".