Divisors of the Positive Integer 9

1, 3, 9

Sum of all the Divisors of 9, including itself

13

Sum of the Proper Divisors of 9

4

Properties of the number 9

The integer 9 is an odd number.
The integer 9 is a Composite number.
4 is less than 9, so 9 is a deficient number.

The number 9 as a Roman Numeral

IX

The number 9 in various Numeral Systems

Base Representation
2:1001
3:100
4:21
5:14
6:13
7:12
8:11
9:10
10:9
11:9
12:9
13:9
14:9
15:9
16:9
17:9
18:9
19:9
20:9
21:9
22:9
23:9
24:9
25:9
26:9
27:9
28:9
29:9
30:9
31:9
32:9
33:9
34:9
35:9
36:9