79207989 has 16 divisors (see below), whose sum is σ = 120870912. Its totient is φ = 45196848.

The previous prime is 79207967. The next prime is 79207991. The reversal of 79207989 is 98970297.

It is a happy number.

It is not a de Polignac number, because 79207989 - 2¹³ = 79199797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79207939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14992 + ... + 19574.

It is an arithmetic number, because the mean of its divisors is an integer number (7554432).

Almost surely, 2^79207989 is an apocalyptic number.

It is an amenable number.

79207989 is a deficient number, since it is larger than the sum of its proper divisors (41662923).

79207989 is a wasteful number, since it uses less digits than its factorization.

79207989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 79207989 is about 8899.8870217548. The cubic root of 79207989 is about 429.4602728922.

The spelling of 79207989 in words is "seventy-nine million, two hundred seven thousand, nine hundred eighty-nine".