98705979899 has 4 divisors (see below), whose sum is σ = 100096205040. Its totient is φ = 97315754760.

The previous prime is 98705979893. The next prime is 98705979901. The reversal of 98705979899 is 99897950789.

It is a happy number.

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 98705979899 - 2²⁴ = 98689202683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98705979893) 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, 695112464 + ... + 695112605.

It is an arithmetic number, because the mean of its divisors is an integer number (25024051260).

Almost surely, 2^98705979899 is an apocalyptic number.

98705979899 is a deficient number, since it is larger than the sum of its proper divisors (1390225141).

98705979899 is a wasteful number, since it uses less digits than its factorization.

98705979899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390225140.

The product of its (nonzero) digits is 925888320, while the sum is 80.

The spelling of 98705979899 in words is "ninety-eight billion, seven hundred five million, nine hundred seventy-nine thousand, eight hundred ninety-nine".