9000012 has 48 divisors (see below), whose sum is σ = 24147200. Its totient is φ = 2555712.

The previous prime is 9000011. The next prime is 9000041. The reversal of 9000012 is 2100009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (9000011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25614 + ... + 25962.

Almost surely, 2^9000012 is an apocalyptic number.

It is an amenable number.

9000012 is an abundant number, since it is smaller than the sum of its proper divisors (15147188).

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

9000012 is a wasteful number, since it uses less digits than its factorization.

9000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 9000012 is about 3000.0019999993. The cubic root of 9000012 is about 208.0084747533.

Subtracting from 9000012 its sum of digits (12), we obtain a square (9000000 = 3000²).

The spelling of 9000012 in words is "nine million, twelve", and thus it is an aban number and an uban number.