79589139 has 16 divisors (see below), whose sum is σ = 121954560. Its totient is φ = 45226080.

The previous prime is 79589129. The next prime is 79589141. The reversal of 79589139 is 93198597.

It is a happy number.

It is not a de Polignac number, because 79589139 - 2⁴ = 79589123 is a prime.

It is a super-2 number, since 2×79589139² = 12668862093522642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79589091 and 79589100.

It is not an unprimeable number, because it can be changed into a prime (79589129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6669 + ... + 14270.

It is an arithmetic number, because the mean of its divisors is an integer number (7622160).

Almost surely, 2^79589139 is an apocalyptic number.

79589139 is a deficient number, since it is larger than the sum of its proper divisors (42365421).

79589139 is a wasteful number, since it uses less digits than its factorization.

79589139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21130.

The product of its digits is 612360, while the sum is 51.

The square root of 79589139 is about 8921.2745165699. The cubic root of 79589139 is about 430.1480272763.

The spelling of 79589139 in words is "seventy-nine million, five hundred eighty-nine thousand, one hundred thirty-nine".