9884644 has 48 divisors (see below), whose sum is σ = 21934080. Its totient is φ = 3785760.

The previous prime is 9884627. The next prime is 9884663. The reversal of 9884644 is 4464889.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9884644.

It is an unprimeable number.

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, 20397 + ... + 20875.

It is an arithmetic number, because the mean of its divisors is an integer number (456960).

Almost surely, 2^9884644 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 9884644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10967040).

9884644 is an abundant number, since it is smaller than the sum of its proper divisors (12049436).

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

9884644 is a wasteful number, since it uses less digits than its factorization.

9884644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 9884644 is about 3143.9853689227. The cubic root of 9884644 is about 214.6118397503.

The spelling of 9884644 in words is "nine million, eight hundred eighty-four thousand, six hundred forty-four".