990244 has 12 divisors (see below), whose sum is σ = 1741068. Its totient is φ = 492800.

The previous prime is 990239. The next prime is 990259. The reversal of 990244 is 442099.

It can be written as a sum of positive squares in 2 ways, for example, as 409600 + 580644 = 640^2 + 762^2 .

It is an unprimeable number.

990244 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684 + ... + 1564.

It is an arithmetic number, because the mean of its divisors is an integer number (145089).

2⁹⁹⁰²⁴⁴ is an apocalyptic number.

It is an amenable number.

990244 is a deficient number, since it is larger than the sum of its proper divisors (750824).

990244 is a wasteful number, since it uses less digits than its factorization.

990244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 990244 is about 995.1100441660. The cubic root of 990244 is about 99.6737366801.

The spelling of 990244 in words is "nine hundred ninety thousand, two hundred forty-four".