989388 has 24 divisors (see below), whose sum is σ = 2565360. Its totient is φ = 329760.

The previous prime is 989381. The next prime is 989411. The reversal of 989388 is 883989.

989388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×989388² = 1957777229088, which contains 22 as substring.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989388.

It is not an unprimeable number, because it can be changed into a prime (989381) by changing a digit.

989388 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, 4473 + ... + 4688.

It is an arithmetic number, because the mean of its divisors is an integer number (106890).

2⁹⁸⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

989388 is an abundant number, since it is smaller than the sum of its proper divisors (1575972).

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

989388 is a wasteful number, since it uses less digits than its factorization.

989388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174 (or 9166 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 989388 is about 994.6798479913. The cubic root of 989388 is about 99.6450079644.

The spelling of 989388 in words is "nine hundred eighty-nine thousand, three hundred eighty-eight".