8989644 has 12 divisors (see below), whose sum is σ = 20975864. Its totient is φ = 2996544.

The previous prime is 8989639. The next prime is 8989661. The reversal of 8989644 is 4469898.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 8989593 and 8989602.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 374557 + ... + 374580.

Almost surely, 2^8989644 is an apocalyptic number.

It is an amenable number.

8989644 is an abundant number, since it is smaller than the sum of its proper divisors (11986220).

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

8989644 is a wasteful number, since it uses less digits than its factorization.

8989644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749144 (or 749142 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 8989644 is about 2998.2735032015. The cubic root of 8989644 is about 207.9285689139.

The spelling of 8989644 in words is "eight million, nine hundred eighty-nine thousand, six hundred forty-four".