79908491 has 8 divisors (see below), whose sum is σ = 88057200. Its totient is φ = 72045792.

The previous prime is 79908487. The next prime is 79908497. The reversal of 79908491 is 19480997.

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

It is not a de Polignac number, because 79908491 - 2² = 79908487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79908497) 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, 70916 + ... + 72033.

It is an arithmetic number, because the mean of its divisors is an integer number (11007150).

Almost surely, 2^79908491 is an apocalyptic number.

79908491 is a deficient number, since it is larger than the sum of its proper divisors (8148709).

79908491 is a wasteful number, since it uses less digits than its factorization.

79908491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143005.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 79908491 is about 8939.1549376885. The cubic root of 79908491 is about 430.7225835208.

The spelling of 79908491 in words is "seventy-nine million, nine hundred eight thousand, four hundred ninety-one".