999000984 has 16 divisors (see below), whose sum is σ = 2497502520. Its totient is φ = 333000320.

The previous prime is 999000967. The next prime is 999000991. The reversal of 999000984 is 489000999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20812497 + ... + 20812544.

Almost surely, 2^999000984 is an apocalyptic number.

It is an amenable number.

999000984 is an abundant number, since it is smaller than the sum of its proper divisors (1498501536).

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

999000984 is a wasteful number, since it uses less digits than its factorization.

999000984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41625050 (or 41625046 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 999000984 is about 31606.9768247455. The cubic root of 999000984 is about 999.6668837125. Note that the first 3 decimals are identical.

The spelling of 999000984 in words is "nine hundred ninety-nine million, nine hundred eighty-four", and thus it is an aban number.