889724544 has 128 divisors (see below), whose sum is σ = 2421888000. Its totient is φ = 289336320.

The previous prime is 889724531. The next prime is 889724569. The reversal of 889724544 is 445427988.

It is a tau number, because it is divible by the number of its divisors (128).

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, 4216599 + ... + 4216809.

It is an arithmetic number, because the mean of its divisors is an integer number (18921000).

Almost surely, 2^889724544 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 889724544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210944000).

889724544 is an abundant number, since it is smaller than the sum of its proper divisors (1532163456).

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

889724544 is a wasteful number, since it uses less digits than its factorization.

889724544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 434 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 889724544 is about 29828.2507700334. The cubic root of 889724544 is about 961.8009249734.

The spelling of 889724544 in words is "eight hundred eighty-nine million, seven hundred twenty-four thousand, five hundred forty-four".