990208 has 22 divisors (see below), whose sum is σ = 1981496. Its totient is φ = 494592.

The previous prime is 990181. The next prime is 990211. The reversal of 990208 is 802099.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (90068).

2⁹⁹⁰²⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990748).

990208 is an abundant number, since it is smaller than the sum of its proper divisors (991288).

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

990208 is an equidigital number, since it uses as much as digits as its factorization.

990208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 990208 is about 995.0919555498. The cubic root of 990208 is about 99.6725287967.

The spelling of 990208 in words is "nine hundred ninety thousand, two hundred eight".