989860 has 24 divisors (see below), whose sum is σ = 2128896. Its totient is φ = 386400.

The previous prime is 989839. The next prime is 989869. The reversal of 989860 is 68989.

It is a happy number.

989860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (989869) 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, 285 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (88704).

2⁹⁸⁹⁸⁶⁰ 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 989860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064448).

989860 is an abundant number, since it is smaller than the sum of its proper divisors (1139036).

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

989860 is a wasteful number, since it uses less digits than its factorization.

989860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 989860 is about 994.9170819722. The cubic root of 989860 is about 99.6608510804.

It can be divided in two parts, 989 and 860, that added together give a square (1849 = 43²).

The spelling of 989860 in words is "nine hundred eighty-nine thousand, eight hundred sixty".