989538 has 48 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 283360.

The previous prime is 989533. The next prime is 989557. The reversal of 989538 is 835989.

989538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 989538.

It is not an unprimeable number, because it can be changed into a prime (989533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21031 + ... + 21077.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2⁹⁸⁹⁵³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149120).

989538 is an abundant number, since it is smaller than the sum of its proper divisors (1308702).

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

989538 is a wasteful number, since it uses less digits than its factorization.

989538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 989538 is about 994.7552462792. The cubic root of 989538 is about 99.6500433991.

The spelling of 989538 in words is "nine hundred eighty-nine thousand, five hundred thirty-eight".