79812159 has 8 divisors (see below), whose sum is σ = 121618560. Its totient is φ = 45606936.

The previous prime is 79812137. The next prime is 79812163. The reversal of 79812159 is 95121897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79812159 - 2⁸ = 79811903 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 79812159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79814159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900269 + ... + 1900310.

It is an arithmetic number, because the mean of its divisors is an integer number (15202320).

Almost surely, 2^79812159 is an apocalyptic number.

79812159 is a deficient number, since it is larger than the sum of its proper divisors (41806401).

79812159 is a wasteful number, since it uses less digits than its factorization.

79812159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800589.

The product of its digits is 45360, while the sum is 42.

The square root of 79812159 is about 8933.7651077247. The cubic root of 79812159 is about 430.5494310727.

The spelling of 79812159 in words is "seventy-nine million, eight hundred twelve thousand, one hundred fifty-nine".