Number 9
The number 9 is a perfect square (3²). It has 3 divisors and a digital root of 9. Explore its full properties below, or find words and phrases with a gematria value of 9.
9
Divisors: 3
1, 3, 9
Sum: 13
Prev Square: 4
3rd Square Number
Next Square: 16
Prev Palindromic: 8
10th Palindromic Number
Next Palindromic: 11
Mathematical Properties
Golden Number55
Reduced Digit Sum9
Magic Constant369
Digital Root9
Octaln/a(11)
Duodecimal9(9)
Hexadecimal9(9)
Binary1001
9th Values
Prime23
Triangular45
Square81
Star433
Pentagonal117
Cube729
Tetrahedral165
Square Pyramidal285
Fibonacci34
Harshad9
Happy Number44