79870889 has 12 divisors (see below), whose sum is σ = 96341184. Its totient is φ = 64855512.

The previous prime is 79870883. The next prime is 79870891. The reversal of 79870889 is 98807897.

It is not a de Polignac number, because 79870889 - 2⁴ = 79870873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79870883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13277 + ... + 18330.

It is an arithmetic number, because the mean of its divisors is an integer number (8028432).

Almost surely, 2^79870889 is an apocalyptic number.

It is an amenable number.

79870889 is a deficient number, since it is larger than the sum of its proper divisors (16470295).

79870889 is a wasteful number, since it uses less digits than its factorization.

79870889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31652 (or 31633 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 56.

The square root of 79870889 is about 8937.0514712628. The cubic root of 79870889 is about 430.6550121798.

The spelling of 79870889 in words is "seventy-nine million, eight hundred seventy thousand, eight hundred eighty-nine".