999000000992 has 48 divisors (see below), whose sum is σ = 2281298544000. Its totient is φ = 421752659328.

The previous prime is 999000000959. The next prime is 999000001039. The reversal of 999000000992 is 299000000999.

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 7 ways as a sum of consecutive naturals, for example, 33267242 + ... + 33297257.

It is an arithmetic number, because the mean of its divisors is an integer number (47527053000).

Almost surely, 2^999000000992 is an apocalyptic number.

It is an amenable number.

999000000992 is an abundant number, since it is smaller than the sum of its proper divisors (1282298543008).

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

999000000992 is a wasteful number, since it uses less digits than its factorization.

999000000992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66564583 (or 66564575 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 47.

The spelling of 999000000992 in words is "nine hundred ninety-nine billion, nine hundred ninety-two", and thus it is an aban number.