79888389 has 32 divisors (see below), whose sum is σ = 130141440. Its totient is φ = 42550272.

The previous prime is 79888387. The next prime is 79888397. The reversal of 79888389 is 98388897.

It is not a de Polignac number, because 79888389 - 2¹ = 79888387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79888381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37887 + ... + 39939.

It is an arithmetic number, because the mean of its divisors is an integer number (4066920).

Almost surely, 2^79888389 is an apocalyptic number.

It is an amenable number.

79888389 is a deficient number, since it is larger than the sum of its proper divisors (50253051).

79888389 is a wasteful number, since it uses less digits than its factorization.

79888389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its digits is 6967296, while the sum is 60.

The square root of 79888389 is about 8938.0304877529. The cubic root of 79888389 is about 430.6864625720.

The spelling of 79888389 in words is "seventy-nine million, eight hundred eighty-eight thousand, three hundred eighty-nine".