990964 has 48 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 400896.

The previous prime is 990961. The next prime is 990967. The reversal of 990964 is 469099.

It is an interprime number because it is at equal distance from previous prime (990961) and next prime (990967).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990961) 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, 16767 + ... + 16825.

It is an arithmetic number, because the mean of its divisors is an integer number (44100).

2⁹⁹⁰⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

990964 is an abundant number, since it is smaller than the sum of its proper divisors (1125836).

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

990964 is a wasteful number, since it uses less digits than its factorization.

990964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 990964 is about 995.4717474645. The cubic root of 990964 is about 99.6978882038.

The spelling of 990964 in words is "nine hundred ninety thousand, nine hundred sixty-four".