999913008 has 40 divisors (see below), whose sum is σ = 2585089008. Its totient is φ = 333048832.

The previous prime is 999913003. The next prime is 999913009. The reversal of 999913008 is 800319999.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (999913003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61516 + ... + 76052.

Almost surely, 2^999913008 is an apocalyptic number.

It is an amenable number.

999913008 is an abundant number, since it is smaller than the sum of its proper divisors (1585176000).

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

999913008 is a wasteful number, since it uses less digits than its factorization.

999913008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15981 (or 15975 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 999913008 is about 31621.4011074778. The cubic root of 999913008 is about 999.9710018258.

The spelling of 999913008 in words is "nine hundred ninety-nine million, nine hundred thirteen thousand, eight".