97899299879 has 4 divisors (see below), whose sum is σ = 97930691040. Its totient is φ = 97867908720.

The previous prime is 97899299843. The next prime is 97899299881.

It is a happy number.

97899299879 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97899299879 - 2²⁰ = 97898251303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97899299879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91899299879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15690902 + ... + 15697139.

It is an arithmetic number, because the mean of its divisors is an integer number (24482672760).

Almost surely, 2^97899299879 is an apocalyptic number.

97899299879 is a deficient number, since it is larger than the sum of its proper divisors (31391161).

97899299879 is a wasteful number, since it uses less digits than its factorization.

97899299879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31391160.

The product of its digits is 3333197952, while the sum is 86.

The spelling of 97899299879 in words is "ninety-seven billion, eight hundred ninety-nine million, two hundred ninety-nine thousand, eight hundred seventy-nine".