990673944 has 96 divisors (see below), whose sum is σ = 2768716800. Its totient is φ = 294952320.

The previous prime is 990673921. The next prime is 990673949. The reversal of 990673944 is 449376099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990673949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121797 + ... + 129675.

It is an arithmetic number, because the mean of its divisors is an integer number (28840800).

Almost surely, 2^990673944 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 990673944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384358400).

990673944 is an abundant number, since it is smaller than the sum of its proper divisors (1778042856).

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

990673944 is a wasteful number, since it uses less digits than its factorization.

990673944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945 (or 7928 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 990673944 is about 31474.9732962556. The cubic root of 990673944 is about 996.8816003585.

The spelling of 990673944 in words is "nine hundred ninety million, six hundred seventy-three thousand, nine hundred forty-four".