Check the properties of a positive integer to enter the number in the search box. If you input two numbers separated by a space, the properties of the pair like GCD are shown. If you separate two numbers by a comma, the sequences containing those numbers are listed.

(9, 12)

A = 9

B = 12

Sum	21
Difference	3
A × B	108
A ÷ B	0.75
B ÷ A	1.3333333333333333
GCD	3
LCM	36
Average	10.5

Combination

220

\[ {}_{ 12 } C_{ 9 } = 220 \]

Sum of squares

225

\[ 9^2 + 12^2 = 225 \]

Norm

$\sqrt{ 9^2 + 12^2 } = 15.0$

Geometric mean

10.392304845413264

(9, 12) is amicable?

Stirling number of the first kind

\[ S(9,\ 12) = 0 \]

Stirling number of the second kind

\[ S(9,\ 12) = 0 \]

Properties of 9 and 12

Properties of 9 and 12: The GCD and LCM of 9 and 12 are 3 and 36 respectively. 9 + 12 = 21, |9 - 12| = 3, 9 * 12 = 108, 9 / 12 = 0.75, 12 / 9 = 1.3333333333333333. The average of 9 and 12 is 10.5 and the norm of them is 15.0. The geometric mean of two numbers is 10.392304845413264.