990052 has 24 divisors (see below), whose sum is σ = 2085440. Its totient is φ = 401760.

The previous prime is 990043. The next prime is 990053. The reversal of 990052 is 250099.

It is a junction number, because it is equal to n+sod(n) for n = 989999 and 990026.

It is not an unprimeable number, because it can be changed into a prime (990053) by changing a digit.

990052 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 1462.

2⁹⁹⁰⁰⁵² is an apocalyptic number.

It is an amenable number.

990052 is an abundant number, since it is smaller than the sum of its proper divisors (1095388).

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

990052 is a wasteful number, since it uses less digits than its factorization.

990052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 990052 is about 995.0135677467. The cubic root of 990052 is about 99.6672942968.

The spelling of 990052 in words is "nine hundred ninety thousand, fifty-two".