79539879 has 8 divisors (see below), whose sum is σ = 106457472. Its totient is φ = 52824440.

The previous prime is 79539869. The next prime is 79539883. The reversal of 79539879 is 97893597.

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 79539879 - 2⁸ = 79539623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79539829) 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 7 ways as a sum of consecutive naturals, for example, 49617 + ... + 51194.

It is an arithmetic number, because the mean of its divisors is an integer number (13307184).

Almost surely, 2^79539879 is an apocalyptic number.

79539879 is a deficient number, since it is larger than the sum of its proper divisors (26917593).

79539879 is a wasteful number, since it uses less digits than its factorization.

79539879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101077.

The product of its digits is 4286520, while the sum is 57.

The square root of 79539879 is about 8918.5132729620. The cubic root of 79539879 is about 430.0592653125.

The spelling of 79539879 in words is "seventy-nine million, five hundred thirty-nine thousand, eight hundred seventy-nine".