99899793 has 24 divisors (see below), whose sum is σ = 168753728. Its totient is φ = 55756512.

The previous prime is 99899783. The next prime is 99899819. The reversal of 99899793 is 39799899.

It is not a de Polignac number, because 99899793 - 2⁶ = 99899729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 99899793.

It is not an unprimeable number, because it can be changed into a prime (99899783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15730 + ... + 21147.

Almost surely, 2^99899793 is an apocalyptic number.

It is an amenable number.

99899793 is a deficient number, since it is larger than the sum of its proper divisors (68853935).

99899793 is a wasteful number, since it uses less digits than its factorization.

99899793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36933 (or 36930 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 99899793 is about 9994.9883941904. The cubic root of 99899793 is about 464.0037916481.

The spelling of 99899793 in words is "ninety-nine million, eight hundred ninety-nine thousand, seven hundred ninety-three".