990835199 has 16 divisors (see below), whose sum is σ = 1081701600. Its totient is φ = 904006656.

The previous prime is 990835187. The next prime is 990835201. The reversal of 990835199 is 991538099.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990835199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990835199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990835499) 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, 236507 + ... + 240659.

It is an arithmetic number, because the mean of its divisors is an integer number (67606350).

Almost surely, 2^990835199 is an apocalyptic number.

990835199 is a deficient number, since it is larger than the sum of its proper divisors (90866401).

990835199 is a wasteful number, since it uses less digits than its factorization.

990835199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 990835199 is about 31477.5348304152. The cubic root of 990835199 is about 996.9356859038.

The spelling of 990835199 in words is "nine hundred ninety million, eight hundred thirty-five thousand, one hundred ninety-nine".