99399109290 has 96 divisors (see below), whose sum is σ = 261433448640. Its totient is φ = 24172581888.

The previous prime is 99399109283. The next prime is 99399109291. The reversal of 99399109290 is 9290199399.

It is not an unprimeable number, because it can be changed into a prime (99399109291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302706 + ... + 538914.

It is an arithmetic number, because the mean of its divisors is an integer number (2723265090).

Almost surely, 2^99399109290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99399109290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130716724320).

99399109290 is an abundant number, since it is smaller than the sum of its proper divisors (162034339350).

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

99399109290 is a wasteful number, since it uses less digits than its factorization.

99399109290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236328 (or 236315 counting only the distinct ones).

The product of its (nonzero) digits is 3188646, while the sum is 60.

It can be divided in two parts, 99399109 and 290, that added together give a palindrome (99399399).

The spelling of 99399109290 in words is "ninety-nine billion, three hundred ninety-nine million, one hundred nine thousand, two hundred ninety".