# 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 |