79316191 has 4 divisors (see below), whose sum is σ = 79754584. Its totient is φ = 78877800.

The previous prime is 79316137. The next prime is 79316201. The reversal of 79316191 is 19161397.

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 79316191 - 2⁷ = 79316063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79316191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79316291) 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, 218925 + ... + 219286.

It is an arithmetic number, because the mean of its divisors is an integer number (19938646).

Almost surely, 2^79316191 is an apocalyptic number.

79316191 is a deficient number, since it is larger than the sum of its proper divisors (438393).

79316191 is a wasteful number, since it uses less digits than its factorization.

79316191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438392.

The product of its digits is 10206, while the sum is 37.

The square root of 79316191 is about 8905.9637883836. The cubic root of 79316191 is about 429.6557385167.

It can be divided in two parts, 79316 and 191, that added together give a cube (79507 = 43³).

The spelling of 79316191 in words is "seventy-nine million, three hundred sixteen thousand, one hundred ninety-one".