Factors of 3969

3, 7. As a product: 3^4 × 7^2.

The factors of 3969 are 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969. It has 15 factors.

Factors of 3969

Pick any whole number from 1 to 10,000.

3969 = 3^{4} \times 7^{2}

How to work it out

1
A factor of 3969 is a whole number that divides it with nothing left over. You only need to test the numbers up to √3969 ≈ 63.00; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 15 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$3969 = 3^{4} \times 7^{2}$
4
Add all the factors: the sum is 6897. Without 3969 itself that is 2928, so 3969 is a deficient number.

LaTeX source of the formulas on this page

\[ 3969 = 3^{4} \times 7^{2} \]

What are the factors of 3969?

The factors of 3969 are 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969. It has 15 factors.

What are the prime factors of 3969?

3, 7. As a product: $3^{4}$ × $7^{2}$ .

How many factors does 3969 have?

3969 has 15 factors (8 factor pairs, one of them 63 × 63).

What is the sum of the factors of 3969?

6897.

Is 3969 a prime number?

No. It is divisible by 3, so 3969 = 3 × 1323.