79871189 has 8 divisors (see below), whose sum is σ = 82219008. Its totient is φ = 77550480.

The previous prime is 79871179. The next prime is 79871201. The reversal of 79871189 is 98117897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79871189 - 2⁴ = 79871173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79871179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722 + ... + 12659.

It is an arithmetic number, because the mean of its divisors is an integer number (10277376).

Almost surely, 2^79871189 is an apocalyptic number.

It is an amenable number.

79871189 is a deficient number, since it is larger than the sum of its proper divisors (2347819).

79871189 is a wasteful number, since it uses less digits than its factorization.

79871189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13555.

The product of its digits is 254016, while the sum is 50.

The square root of 79871189 is about 8937.0682553061. The cubic root of 79871189 is about 430.6555513681.

The spelling of 79871189 in words is "seventy-nine million, eight hundred seventy-one thousand, one hundred eighty-nine".