999000012 has 48 divisors (see below), whose sum is σ = 2468471040. Its totient is φ = 313572672.

The previous prime is 999000011. The next prime is 999000029. The reversal of 999000012 is 210000999.

It is not an unprimeable number, because it can be changed into a prime (999000011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24958 + ... + 51194.

It is an arithmetic number, because the mean of its divisors is an integer number (51426480).

Almost surely, 2^999000012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234235520).

999000012 is an abundant number, since it is smaller than the sum of its proper divisors (1469471028).

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

999000012 is a wasteful number, since it uses less digits than its factorization.

999000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26430 (or 26428 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 999000012 is about 31606.9614483898. The cubic root of 999000012 is about 999.6665594965. Note that the first 3 decimals are identical.

The spelling of 999000012 in words is "nine hundred ninety-nine million, twelve", and thus it is an aban number.