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Cardinal | nine | |||
Ordinal | 9th (ninth) |
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Numeral system | nonary | |||
Factorization | 32 | |||
Divisors | 1, 3, 9 | |||
Roman numeral | IX | |||
Unicode symbol(s) | Ⅸ, ⅸ | |||
Greek prefix | ||||
Latin prefix | ||||
Binary | 10012 | |||
Ternary | 1003 | |||
Quaternary | 214 | |||
Quinary | 145 | |||
Senary | 136 | |||
Octal | 118 | |||
Duodecimal | 912 | |||
Hexadecimal | 916 | |||
Vigesimal | 920 | |||
Base 36 | 936 | |||
Amharic | ፱ | |||
Arabicl & Kurdish | ٩ | |||
Urdu | ||||
Armenian numeral | Թ | |||
Bengali | ৯ | |||
Chinese/Japanese /Korean numeral |
九 (jiu) 玖 (formal writing) |
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Devanāgarī | ९ (nau) | |||
Greek numeral | θ´ | |||
Hebrew numeral | ט (Tet) | |||
Tamil numerals | ௯ | |||
Khmer | ៩ | |||
Telugu numeral | ౯ | |||
Thai numeral | ๙ |
9 (nine /ˈnaɪn/) is the natural number following 8 and preceding 10. Nine is the highest digit.
Nine is a number that appears often in Indian Culture and mythology. Some instances are enumerated below.
According to Georges Ifrah, the origin of the 9 integers can be attributed to ancient Indian civilization, and was adopted by subsequent civilizations in conjunction with the 0.
In the beginning, various Indians wrote 9 similar to the modern closing question mark without the bottom dot. The Kshatrapa, Andhra and Gupta started curving the bottom vertical line coming up with a 3-look-alike. The Nagari continued the bottom stroke to make a circle and enclose the 3-look-alike, in much the same way that the @ character encircles a lowercase a. As time went on, the enclosing circle became bigger and its line continued beyond the circle downwards, as the 3-look-alike became smaller. Soon, all that was left of the 3-look-alike was a squiggle. The Arabs simply connected that squiggle to the downward stroke at the middle and subsequent European change was purely cosmetic.
While the shape of the 9 character has an ascender in most modern typefaces, in typefaces with text figures the character usually has a descender, as, for example, in .
This numeral resembles an inverted 6. To disambiguate the two on objects and documents that can be inverted, the 9 is often underlined, as is done for the 6. Another distinction from the 6 is that it is sometimes handwritten with a straight stem, resembling a raised lower-case letter q.