79626891 has 8 divisors (see below), whose sum is σ = 111757120. Its totient is φ = 50290632.

The previous prime is 79626881. The next prime is 79626893. The reversal of 79626891 is 19862697.

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

It is not a de Polignac number, because 79626891 - 2¹¹ = 79624843 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 79626891.

It is not an unprimeable number, because it can be changed into a prime (79626893) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 698425 + ... + 698538.

It is an arithmetic number, because the mean of its divisors is an integer number (13969640).

Almost surely, 2^79626891 is an apocalyptic number.

79626891 is a deficient number, since it is larger than the sum of its proper divisors (32130229).

79626891 is a wasteful number, since it uses less digits than its factorization.

79626891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396985.

The product of its digits is 326592, while the sum is 48.

The square root of 79626891 is about 8923.3901069044. The cubic root of 79626891 is about 430.2160281017.

The spelling of 79626891 in words is "seventy-nine million, six hundred twenty-six thousand, eight hundred ninety-one".