79718905 has 16 divisors (see below), whose sum is σ = 112285440. Its totient is φ = 53186112.

The previous prime is 79718839. The next prime is 79718911. The reversal of 79718905 is 50981797.

It is not a de Polignac number, because 79718905 - 2⁹ = 79718393 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29485 + ... + 32074.

It is an arithmetic number, because the mean of its divisors is an integer number (7017840).

Almost surely, 2^79718905 is an apocalyptic number.

It is an amenable number.

79718905 is a deficient number, since it is larger than the sum of its proper divisors (32566535).

79718905 is a wasteful number, since it uses less digits than its factorization.

79718905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61608.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 79718905 is about 8928.5443942448. The cubic root of 79718905 is about 430.3816784194.

The spelling of 79718905 in words is "seventy-nine million, seven hundred eighteen thousand, nine hundred five".