989424 has 30 divisors (see below), whose sum is σ = 2769416. Its totient is φ = 329760.

The previous prime is 989423. The next prime is 989441. The reversal of 989424 is 424989.

It is a happy number.

989424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3292 + ... + 3579.

2⁹⁸⁹⁴²⁴ is an apocalyptic number.

It is an amenable number.

989424 is an abundant number, since it is smaller than the sum of its proper divisors (1779992).

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

989424 is a wasteful number, since it uses less digits than its factorization.

989424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885 (or 6876 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 989424 is about 994.6979441016. The cubic root of 989424 is about 99.6462165151.

The spelling of 989424 in words is "nine hundred eighty-nine thousand, four hundred twenty-four".