79739161 has 4 divisors (see below), whose sum is σ = 82311424. Its totient is φ = 77166900.

The previous prime is 79739147. The next prime is 79739207. The reversal of 79739161 is 16193797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16193797 = 2549 ⋅6353.

It is a cyclic number.

It is not a de Polignac number, because 79739161 - 2²⁵ = 46184729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79731161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286085 + ... + 1286146.

It is an arithmetic number, because the mean of its divisors is an integer number (20577856).

Almost surely, 2^79739161 is an apocalyptic number.

It is an amenable number.

79739161 is a deficient number, since it is larger than the sum of its proper divisors (2572263).

79739161 is a wasteful number, since it uses less digits than its factorization.

79739161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572262.

The product of its digits is 71442, while the sum is 43.

The square root of 79739161 is about 8929.6786616317. The cubic root of 79739161 is about 430.4181276280.

The spelling of 79739161 in words is "seventy-nine million, seven hundred thirty-nine thousand, one hundred sixty-one".