99909909092 has 72 divisors (see below), whose sum is σ = 223437547200. Its totient is φ = 38178694656.

The previous prime is 99909909089. The next prime is 99909909131. The reversal of 99909909092 is 29090990999.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171167 + ... + 478662.

Almost surely, 2^99909909092 is an apocalyptic number.

It is an amenable number.

99909909092 is an abundant number, since it is smaller than the sum of its proper divisors (123527638108).

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

99909909092 is a wasteful number, since it uses less digits than its factorization.

99909909092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649893 (or 649874 counting only the distinct ones).

The product of its (nonzero) digits is 9565938, while the sum is 65.

It can be divided in two parts, 99909 and 909092, that added together give a palindrome (1009001).

The spelling of 99909909092 in words is "ninety-nine billion, nine hundred nine million, nine hundred nine thousand, ninety-two".