890000012 has 18 divisors (see below), whose sum is σ = 1711963764. Its totient is φ = 404545240.

The previous prime is 890000011. The next prime is 890000021. The reversal of 890000012 is 210000098.

It is not an unprimeable number, because it can be changed into a prime (890000011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 918938 + ... + 919905.

It is an arithmetic number, because the mean of its divisors is an integer number (95109098).

Almost surely, 2^890000012 is an apocalyptic number.

It is an amenable number.

890000012 is a deficient number, since it is larger than the sum of its proper divisors (821963752).

890000012 is a wasteful number, since it uses less digits than its factorization.

890000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838869 (or 1838856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 890000012 is about 29832.8679814731. The cubic root of 890000012 is about 961.9001759309.

The spelling of 890000012 in words is "eight hundred ninety million, twelve", and thus it is an aban number.