989808 has 40 divisors (see below), whose sum is σ = 2709648. Its totient is φ = 310272.

The previous prime is 989803. The next prime is 989827. The reversal of 989808 is 808989.

989808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 989808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989803) by changing a digit.

989808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 1422.

2⁹⁸⁹⁸⁰⁸ 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 989808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354824).

989808 is an abundant number, since it is smaller than the sum of its proper divisors (1719840).

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

989808 is a wasteful number, since it uses less digits than its factorization.

989808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 989808 is about 994.8909487979. The cubic root of 989808 is about 99.6591058993.

The spelling of 989808 in words is "nine hundred eighty-nine thousand, eight hundred eight".