79078979 has 8 divisors (see below), whose sum is σ = 90531168. Its totient is φ = 67665600.

The previous prime is 79078949. The next prime is 79078999. The reversal of 79078979 is 97987097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79078979 - 2⁸ = 79078723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79078949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5192 + ... + 13605.

It is an arithmetic number, because the mean of its divisors is an integer number (11316396).

Almost surely, 2^79078979 is an apocalyptic number.

79078979 is a deficient number, since it is larger than the sum of its proper divisors (11452189).

79078979 is a wasteful number, since it uses less digits than its factorization.

79078979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19405.

The product of its (nonzero) digits is 2000376, while the sum is 56.

The square root of 79078979 is about 8892.6362233030. The cubic root of 79078979 is about 429.2269850725.

The spelling of 79078979 in words is "seventy-nine million, seventy-eight thousand, nine hundred seventy-nine".