999984000012 has 24 divisors (see below), whose sum is σ = 2470548706416. Its totient is φ = 313720470528.

The previous prime is 999983999951. The next prime is 999984000031. The reversal of 999984000012 is 210000489999.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450940973 + ... + 2450941380.

It is an arithmetic number, because the mean of its divisors is an integer number (102939529434).

Almost surely, 2^999984000012 is an apocalyptic number.

It is an amenable number.

999984000012 is an abundant number, since it is smaller than the sum of its proper divisors (1470564706404).

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

999984000012 is a wasteful number, since it uses less digits than its factorization.

999984000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901882377 (or 4901882375 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 999984000012 in words is "nine hundred ninety-nine billion, nine hundred eighty-four million, twelve", and thus it is an aban number.