989999908 has 12 divisors (see below), whose sum is σ = 1733346160. Its totient is φ = 494758152.

The previous prime is 989999887. The next prime is 989999909. The reversal of 989999908 is 809999989.

It is not an unprimeable number, because it can be changed into a prime (989999909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51078 + ... + 67741.

Almost surely, 2^989999908 is an apocalyptic number.

It is an amenable number.

989999908 is a deficient number, since it is larger than the sum of its proper divisors (743346252).

989999908 is a wasteful number, since it uses less digits than its factorization.

989999908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120906 (or 120904 counting only the distinct ones).

The product of its (nonzero) digits is 34012224, while the sum is 70.

The square root of 989999908 is about 31464.2639831285. The cubic root of 989999908 is about 996.6554625398.

The spelling of 989999908 in words is "nine hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred eight".