999916808 has 16 divisors (see below), whose sum is σ = 2045284560. Its totient is φ = 454507600.

The previous prime is 999916807. The next prime is 999916859. The reversal of 999916808 is 808619999.

It is not an unprimeable number, because it can be changed into a prime (999916807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681258 + ... + 5681433.

It is an arithmetic number, because the mean of its divisors is an integer number (127830285).

Almost surely, 2^999916808 is an apocalyptic number.

It is an amenable number.

999916808 is an abundant number, since it is smaller than the sum of its proper divisors (1045367752).

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

999916808 is a wasteful number, since it uses less digits than its factorization.

999916808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11362708 (or 11362704 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 59.

The square root of 999916808 is about 31621.4611933098. The cubic root of 999916808 is about 999.9722685643.

The spelling of 999916808 in words is "nine hundred ninety-nine million, nine hundred sixteen thousand, eight hundred eight".