79513189 has 4 divisors (see below), whose sum is σ = 90872224. Its totient is φ = 68154156.

The previous prime is 79513177. The next prime is 79513229. The reversal of 79513189 is 98131597.

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: 98131597 = 2963 ⋅33119.

It is not a de Polignac number, because 79513189 - 2¹¹ = 79511141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79513169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5679507 + ... + 5679520.

It is an arithmetic number, because the mean of its divisors is an integer number (22718056).

Almost surely, 2^79513189 is an apocalyptic number.

It is an amenable number.

79513189 is a deficient number, since it is larger than the sum of its proper divisors (11359035).

79513189 is a wasteful number, since it uses less digits than its factorization.

79513189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11359034.

The product of its digits is 68040, while the sum is 43.

The square root of 79513189 is about 8917.0168217852. The cubic root of 79513189 is about 430.0111570929.

The spelling of 79513189 in words is "seventy-nine million, five hundred thirteen thousand, one hundred eighty-nine".