9 (number)
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Cardinal | nine | |||
Ordinal | 9th (ninth) | |||
Numeral system | nonary | |||
Factorization | 32 | |||
Greek numeral | Θ´ | |||
Roman numeral | IX | |||
Unicode symbol(s) | Ⅸ, ⅸ | |||
Greek prefix | ennea- | |||
Latin prefix | nona- | |||
Binary | 10012 | |||
Ternary | 1003 | |||
Quaternary | 214 | |||
Quinary | 145 | |||
Senary | 136 | |||
Octal | 118 | |||
Duodecimal | 912 | |||
Hexadecimal | 916 | |||
Vigesimal | 920 | |||
Base 36 | 936 | |||
Amharic | ፱ | |||
Arabicl | ٩ | |||
Urdu | File:Urdu numeral nine.svg | |||
Armenian numeral | Թ | |||
Bengali | ৯ | |||
Chinese/Japanese /Korean numeral | 九 (jiu) 玖 (formal writing) | |||
Devanāgarī | ९ (Nao) | |||
Greek numeral | θ´ | |||
Hebrew numeral | ט (Tet) | |||
Tamil numeral | ௯ | |||
Khmer | ៩ | |||
Telugu numeral | ౯ | |||
Thai numeral | ๙ |
This article may be expanded with text translated from the [[:en:Lua error in Module:WikidataIB at line 482: attempt to index field 'wikibase' (a nil value).|corresponding article]] in English. Click [expand] for important translation instructions.
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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.
The number also looks like an inverted 6. To tell the difference between the two, they are often underlined.
Mathematics[change]
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