990512 has 20 divisors (see below), whose sum is σ = 1982016. Its totient is φ = 479040.

The previous prime is 990511. The next prime is 990523. The reversal of 990512 is 215099.

It is a happy number.

990512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

990512 is an admirable number.

It is a super-2 number, since 2×990512² = 1962228044288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (990511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503 + ... + 1494.

2⁹⁹⁰⁵¹² is an apocalyptic number.

It is an amenable number.

990512 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

990512 is a wasteful number, since it uses less digits than its factorization.

990512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 990512 is about 995.2446935302. The cubic root of 990512 is about 99.6827277813.

The spelling of 990512 in words is "nine hundred ninety thousand, five hundred twelve".