79974079 has 4 divisors (see below), whose sum is σ = 82553920. Its totient is φ = 77394240.

The previous prime is 79974077. The next prime is 79974091. The reversal of 79974079 is 97047997.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79974079 - 2¹ = 79974077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79974077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289874 + ... + 1289935.

It is an arithmetic number, because the mean of its divisors is an integer number (20638480).

Almost surely, 2^79974079 is an apocalyptic number.

79974079 is a deficient number, since it is larger than the sum of its proper divisors (2579841).

79974079 is a wasteful number, since it uses less digits than its factorization.

79974079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579840.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 79974079 is about 8942.8227646532. The cubic root of 79974079 is about 430.8403953946.

The spelling of 79974079 in words is "seventy-nine million, nine hundred seventy-four thousand, seventy-nine".