8990964 has 18 divisors (see below), whose sum is σ = 22727250. Its totient is φ = 2996976.

The previous prime is 8990939. The next prime is 8990981. The reversal of 8990964 is 4690998.

It can be written as a sum of positive squares in only one way, i.e., 5963364 + 3027600 = 2442^2 + 1740^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124839 + ... + 124910.

It is an arithmetic number, because the mean of its divisors is an integer number (1262625).

Almost surely, 2^8990964 is an apocalyptic number.

It is an amenable number.

8990964 is an abundant number, since it is smaller than the sum of its proper divisors (13736286).

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

8990964 is a wasteful number, since it uses less digits than its factorization.

8990964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249759 (or 249754 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 8990964 is about 2998.4936218041. The cubic root of 8990964 is about 207.9387455229.

The spelling of 8990964 in words is "eight million, nine hundred ninety thousand, nine hundred sixty-four".