9900115884 has 18 divisors (see below), whose sum is σ = 25025293020. Its totient is φ = 3300038616.

The previous prime is 9900115871. The next prime is 9900115921. The reversal of 9900115884 is 4885110099.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137501574 + ... + 137501645.

Almost surely, 2^9900115884 is an apocalyptic number.

It is an amenable number.

9900115884 is an abundant number, since it is smaller than the sum of its proper divisors (15125177136).

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

9900115884 is a wasteful number, since it uses less digits than its factorization.

9900115884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275003229 (or 275003224 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 9900115884 is about 99499.3260479688. The cubic root of 9900115884 is about 2147.2375470841.

The spelling of 9900115884 in words is "nine billion, nine hundred million, one hundred fifteen thousand, eight hundred eighty-four".