79871907 has 4 divisors (see below), whose sum is σ = 106495880. Its totient is φ = 53247936.

The previous prime is 79871881. The next prime is 79871917. The reversal of 79871907 is 70917897.

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

It is not a de Polignac number, because 79871907 - 2⁸ = 79871651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79871917) 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, 13311982 + ... + 13311987.

It is an arithmetic number, because the mean of its divisors is an integer number (26623970).

Almost surely, 2^79871907 is an apocalyptic number.

79871907 is a deficient number, since it is larger than the sum of its proper divisors (26623973).

79871907 is a wasteful number, since it uses less digits than its factorization.

79871907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26623972.

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 79871907 is about 8937.1084249885. The cubic root of 79871907 is about 430.6568418199.

The spelling of 79871907 in words is "seventy-nine million, eight hundred seventy-one thousand, nine hundred seven".