Factors of 989
The factors of 989 are 1, 23, 43, and 989. In total, 989 has 4 factors. Its prime factorization is 23 × 43, and the sum of all its factors is 1056.
All factors of 989
Here are all 4 factors of 989, listed from smallest to largest.
Factor pairs of 989
These 2 pairs of whole numbers each multiply to give 989.
Prime factorization of 989
Dividing 989 by the smallest prime at each step gives its prime factorization:
The distinct prime factors of 989 are 23, 43. To factorize any other number, use the prime factorization calculator.
Factor tree of 989
A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.
Properties of 989
| Number of factors | 4 |
|---|---|
| Sum of factors | 1056 |
| Sum of proper factors | 67 |
| Prime factorization | 23 × 43 |
| Prime or composite? | Composite |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 989 interesting
- 989 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 2 different ways.
- 989 is a deficient number: its proper factors sum to 67, which is 922 less than 989 itself.
How to find the factors of 989 yourself
Divide 989 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √989 ≈ 31.45, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 23, 43, 989. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 989.
Frequently asked questions about 989
What are the factors of 989?
Is 989 a prime number?
What is the prime factorization of 989?
What two numbers multiply to give 989?
What is the sum of the factors of 989?
Is 989 a perfect square?
What is the largest factor of 989 other than itself?
How many factors does 989 have?
Explore more
Try another number in the factor calculator, break 989 down further with the prime factorization calculator, or compare 989 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.