990044928 has 108 divisors (see below), whose sum is σ = 2864036448. Its totient is φ = 328919040.

The previous prime is 990044921. The next prime is 990044933. The reversal of 990044928 is 829440099.

It is not an unprimeable number, because it can be changed into a prime (990044921) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 992526 + ... + 993522.

It is an arithmetic number, because the mean of its divisors is an integer number (26518856).

Almost surely, 2^990044928 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 990044928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432018224).

990044928 is an abundant number, since it is smaller than the sum of its proper divisors (1873991520).

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

990044928 is a wasteful number, since it uses less digits than its factorization.

990044928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 990044928 is about 31464.9793897914. The cubic root of 990044928 is about 996.6705698640.

The spelling of 990044928 in words is "nine hundred ninety million, forty-four thousand, nine hundred twenty-eight".