999900108 has 18 divisors (see below), whose sum is σ = 2527525364. Its totient is φ = 333300024.

The previous prime is 999900107. The next prime is 999900131. The reversal of 999900108 is 801009999.

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

It is not an unprimeable number, because it can be changed into a prime (999900107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13887466 + ... + 13887537.

Almost surely, 2^999900108 is an apocalyptic number.

It is an amenable number.

999900108 is an abundant number, since it is smaller than the sum of its proper divisors (1527625256).

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

999900108 is a wasteful number, since it uses less digits than its factorization.

999900108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775013 (or 27775008 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 999900108 is about 31621.1971310385. The cubic root of 999900108 is about 999.9667015579.

The spelling of 999900108 in words is "nine hundred ninety-nine million, nine hundred thousand, one hundred eight".