79898864 has 10 divisors (see below), whose sum is σ = 154804080. Its totient is φ = 39949424.

The previous prime is 79898831. The next prime is 79898867. The reversal of 79898864 is 46889897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79898867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496824 + ... + 2496855.

It is an arithmetic number, because the mean of its divisors is an integer number (15480408).

Almost surely, 2^79898864 is an apocalyptic number.

It is an amenable number.

79898864 is a deficient number, since it is larger than the sum of its proper divisors (74905216).

79898864 is a wasteful number, since it uses less digits than its factorization.

79898864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993687 (or 4993681 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The square root of 79898864 is about 8938.6164477507. The cubic root of 79898864 is about 430.7052856809.

The spelling of 79898864 in words is "seventy-nine million, eight hundred ninety-eight thousand, eight hundred sixty-four".