989140 has 36 divisors (see below), whose sum is σ = 2208276. Its totient is φ = 372096.

The previous prime is 989123. The next prime is 989171. The reversal of 989140 is 41989.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 521284 = 684^2 + 722^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7152 + ... + 7288.

It is an arithmetic number, because the mean of its divisors is an integer number (61341).

2⁹⁸⁹¹⁴⁰ 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 989140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104138).

989140 is an abundant number, since it is smaller than the sum of its proper divisors (1219136).

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

989140 is a wasteful number, since it uses less digits than its factorization.

989140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 989140 is about 994.5551769510. Note that the first 3 decimals coincide. The cubic root of 989140 is about 99.6366815960.

The spelling of 989140 in words is "nine hundred eighty-nine thousand, one hundred forty".