990440304 has 80 divisors (see below), whose sum is σ = 2933169408. Its totient is φ = 282110976.

The previous prime is 990440299. The next prime is 990440357. The reversal of 990440304 is 403044099.

It is a happy number.

990440304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×990440304² = 1961943991575224832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108859 + ... + 117605.

Almost surely, 2^990440304 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 990440304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466584704).

990440304 is an abundant number, since it is smaller than the sum of its proper divisors (1942729104).

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

990440304 is a wasteful number, since it uses less digits than its factorization.

990440304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9102 (or 9096 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 990440304 is about 31471.2615571731. The cubic root of 990440304 is about 996.8032261936.

The spelling of 990440304 in words is "nine hundred ninety million, four hundred forty thousand, three hundred four".