999000988 has 12 divisors (see below), whose sum is σ = 1851090192. Its totient is φ = 470118080.

The previous prime is 999000967. The next prime is 999000991. The reversal of 999000988 is 889000999.

It is a super-2 number, since 2×999000988² = 1996005948049952288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7345528 + ... + 7345663.

It is an arithmetic number, because the mean of its divisors is an integer number (154257516).

Almost surely, 2^999000988 is an apocalyptic number.

It is an amenable number.

999000988 is a deficient number, since it is larger than the sum of its proper divisors (852089204).

999000988 is a wasteful number, since it uses less digits than its factorization.

999000988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14691212 (or 14691210 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 999000988 is about 31606.9768880227. The cubic root of 999000988 is about 999.6668850467. Note that the first 3 decimals are identical.

The spelling of 999000988 in words is "nine hundred ninety-nine million, nine hundred eighty-eight", and thus it is an aban number.