990200 has 24 divisors (see below), whose sum is σ = 2302680. Its totient is φ = 396000.

The previous prime is 990181. The next prime is 990211. The reversal of 990200 is 2099.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

990200 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2276 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (95945).

2⁹⁹⁰²⁰⁰ is an apocalyptic number.

It is an amenable number.

990200 is an abundant number, since it is smaller than the sum of its proper divisors (1312480).

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

990200 is a wasteful number, since it uses less digits than its factorization.

990200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967 (or 4958 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 990200 is about 995.0879358127. The cubic root of 990200 is about 99.6722603742.

Adding to 990200 its reverse (2099), we get a palindrome (992299).

It can be divided in two parts, 9 and 90200, that added together give a palindrome (90209).

The spelling of 990200 in words is "nine hundred ninety thousand, two hundred".