79685079 has 4 divisors (see below), whose sum is σ = 106246776. Its totient is φ = 53123384.

The previous prime is 79685077. The next prime is 79685083. The reversal of 79685079 is 97058697.

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 79685079 - 2¹ = 79685077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79685077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13280844 + ... + 13280849.

It is an arithmetic number, because the mean of its divisors is an integer number (26561694).

Almost surely, 2^79685079 is an apocalyptic number.

79685079 is a deficient number, since it is larger than the sum of its proper divisors (26561697).

79685079 is a wasteful number, since it uses less digits than its factorization.

79685079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26561696.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 79685079 is about 8926.6499315253. The cubic root of 79685079 is about 430.3207972093.

The spelling of 79685079 in words is "seventy-nine million, six hundred eighty-five thousand, seventy-nine".