989824 has 64 divisors (see below), whose sum is σ = 2325600. Its totient is φ = 414720.

The previous prime is 989803. The next prime is 989827. The reversal of 989824 is 428989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

Its product of digits (41472) is a multiple of the sum of its prime factors (81).

It is not an unprimeable number, because it can be changed into a prime (989827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26734 + ... + 26770.

2⁹⁸⁹⁸²⁴ 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 989824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162800).

989824 is an abundant number, since it is smaller than the sum of its proper divisors (1335776).

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

989824 is a wasteful number, since it uses less digits than its factorization.

989824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 69 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 989824 is about 994.8989898477. The cubic root of 989824 is about 99.6596428846.

The spelling of 989824 in words is "nine hundred eighty-nine thousand, eight hundred twenty-four".