79239081 has 12 divisors (see below), whose sum is σ = 107694608. Its totient is φ = 51823824.

The previous prime is 79239079. The next prime is 79239119. The reversal of 79239081 is 18093297.

It is not a de Polignac number, because 79239081 - 2¹ = 79239079 is a prime.

It is a super-2 number, since 2×79239081² = 12557663915449122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79231081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3726 + ... + 13128.

Almost surely, 2^79239081 is an apocalyptic number.

It is an amenable number.

79239081 is a deficient number, since it is larger than the sum of its proper divisors (28455527).

79239081 is an equidigital number, since it uses as much as digits as its factorization.

79239081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9512 (or 9459 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 79239081 is about 8901.6336141183. The cubic root of 79239081 is about 429.5164584370.

Adding to 79239081 its product of nonzero digits (27216), we get a palindrome (79266297).

The spelling of 79239081 in words is "seventy-nine million, two hundred thirty-nine thousand, eighty-one".