79585139 has 2 divisors, whose sum is σ = 79585140. Its totient is φ = 79585138.

The previous prime is 79585123. The next prime is 79585201. The reversal of 79585139 is 93158597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79585139 - 2⁴ = 79585123 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79585093 and 79585102.

It is not a weakly prime, because it can be changed into another prime (79585739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39792569 + 39792570.

It is an arithmetic number, because the mean of its divisors is an integer number (39792570).

Almost surely, 2^79585139 is an apocalyptic number.

79585139 is a deficient number, since it is larger than the sum of its proper divisors (1).

79585139 is an equidigital number, since it uses as much as digits as its factorization.

79585139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 47.

The square root of 79585139 is about 8921.0503305384. The cubic root of 79585139 is about 430.1408210128.

The spelling of 79585139 in words is "seventy-nine million, five hundred eighty-five thousand, one hundred thirty-nine".