990250 has 32 divisors (see below), whose sum is σ = 1971216. Its totient is φ = 371200.

The previous prime is 990239. The next prime is 990259. The reversal of 990250 is 52099.

990250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 27889 + 962361 = 167^2 + 981^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (990259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4134 + ... + 4366.

2⁹⁹⁰²⁵⁰ is an apocalyptic number.

990250 is a deficient number, since it is larger than the sum of its proper divisors (980966).

990250 is a wasteful number, since it uses less digits than its factorization.

990250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 257 counting only the distinct ones).

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

The square root of 990250 is about 995.1130589034. The cubic root of 990250 is about 99.6739379912.

The spelling of 990250 in words is "nine hundred ninety thousand, two hundred fifty".