990872 has 16 divisors (see below), whose sum is σ = 1922400. Its totient is φ = 478240.

The previous prime is 990851. The next prime is 990881. The reversal of 990872 is 278099.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 1904 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (120150).

2⁹⁹⁰⁸⁷² is an apocalyptic number.

It is an amenable number.

990872 is a deficient number, since it is larger than the sum of its proper divisors (931528).

990872 is a wasteful number, since it uses less digits than its factorization.

990872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306 (or 4302 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 990872 is about 995.4255371448. The cubic root of 990872 is about 99.6948028278.

The spelling of 990872 in words is "nine hundred ninety thousand, eight hundred seventy-two".