9 (number)
natural number From Wikipedia, the free encyclopedia
Remove ads
9 (nine) is the Arabic number which comes after 8 and before 10. It is an odd number, and is the highest single-digit number. It is also a square number. In Roman numerals, nine can be written as IX.
 | This article may be expanded with text translated from the corresponding article in English. Click [expand] for important translation instructions.
|
The number also looks like an inverted 6. To tell the difference between the two, they are often underlined.
Remove ads
Mathematics
The number nine (9) takes the shape of an upside-down six (6), is a multiple of 3, and the third square number after 4.
Nine is also a composite number, having the factors: 1, 3 and 9 itself. Nine is the first odd composite number
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads