990839304 has 224 divisors, whose sum is σ = 3430096320. Its totient is φ = 261180288.

The previous prime is 990839299. The next prime is 990839387. The reversal of 990839304 is 403938099.

It is a super-3 number, since 3×990839304³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 990839304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 529779 + ... + 531645.

It is an arithmetic number, because the mean of its divisors is an integer number (15312930).

Almost surely, 2^990839304 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 990839304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1715048160).

990839304 is an abundant number, since it is smaller than the sum of its proper divisors (2439257016).

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

990839304 is a wasteful number, since it uses less digits than its factorization.

990839304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 990839304 is about 31477.6000355809. The cubic root of 990839304 is about 996.9370626599.

The spelling of 990839304 in words is "nine hundred ninety million, eight hundred thirty-nine thousand, three hundred four".