99317749879 has 4 divisors (see below), whose sum is σ = 99322414240. Its totient is φ = 99313085520.

The previous prime is 99317749871. The next prime is 99317749889. The reversal of 99317749879 is 97894771399.

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 99317749879 - 2³ = 99317749871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99317749871) 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, 2300094 + ... + 2342875.

It is an arithmetic number, because the mean of its divisors is an integer number (24830603560).

Almost surely, 2^99317749879 is an apocalyptic number.

99317749879 is a deficient number, since it is larger than the sum of its proper divisors (4664361).

99317749879 is a wasteful number, since it uses less digits than its factorization.

99317749879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664360.

The product of its digits is 216040608, while the sum is 73.

The spelling of 99317749879 in words is "ninety-nine billion, three hundred seventeen million, seven hundred forty-nine thousand, eight hundred seventy-nine".