8899644 has 48 divisors (see below), whose sum is σ = 22649760. Its totient is φ = 2703360.

The previous prime is 8899633. The next prime is 8899651. The reversal of 8899644 is 4469988.

8899644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 8899593 and 8899602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13564 + ... + 14204.

It is an arithmetic number, because the mean of its divisors is an integer number (471870).

Almost surely, 2^8899644 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 8899644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11324880).

8899644 is an abundant number, since it is smaller than the sum of its proper divisors (13750116).

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

8899644 is a wasteful number, since it uses less digits than its factorization.

8899644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 748 counting only the distinct ones).

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

The square root of 8899644 is about 2983.2271117030. The cubic root of 8899644 is about 207.2323466343.

The spelling of 8899644 in words is "eight million, eight hundred ninety-nine thousand, six hundred forty-four".