990316844 has 48 divisors (see below), whose sum is σ = 2022602400. Its totient is φ = 419266560.

The previous prime is 990316843. The next prime is 990316849. The reversal of 990316844 is 448613099.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 990316795 and 990316804.

It is not an unprimeable number, because it can be changed into a prime (990316843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65732 + ... + 79380.

It is an arithmetic number, because the mean of its divisors is an integer number (42137550).

Almost surely, 2^990316844 is an apocalyptic number.

It is an amenable number.

990316844 is an abundant number, since it is smaller than the sum of its proper divisors (1032285556).

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

990316844 is a wasteful number, since it uses less digits than its factorization.

990316844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778 (or 13776 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 990316844 is about 31469.3000239916. The cubic root of 990316844 is about 996.7618067563.

The spelling of 990316844 in words is "nine hundred ninety million, three hundred sixteen thousand, eight hundred forty-four".