79439898 has 16 divisors (see below), whose sum is σ = 161878176. Its totient is φ = 25980240.

The previous prime is 79439891. The next prime is 79439909. The reversal of 79439898 is 89893497.

It is not an unprimeable number, because it can be changed into a prime (79439891) 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 in 7 ways as a sum of consecutive naturals, for example, 124588 + ... + 125223.

It is an arithmetic number, because the mean of its divisors is an integer number (10117386).

Almost surely, 2^79439898 is an apocalyptic number.

79439898 is an abundant number, since it is smaller than the sum of its proper divisors (82438278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79439898 is a wasteful number, since it uses less digits than its factorization.

79439898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249869.

The product of its digits is 3919104, while the sum is 57.

The square root of 79439898 is about 8912.9062600254. The cubic root of 79439898 is about 429.8789960585.

The spelling of 79439898 in words is "seventy-nine million, four hundred thirty-nine thousand, eight hundred ninety-eight".