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This article is about the natural number. For the emergency telephone number, see 999 (emergency telephone number). For other uses, see 999 (disambiguation).
999 (nine hundred [and] ninety-nine or nine-nine-nine) is a natural number following 998 and preceding 1000.
Natural number
In mathematics
- , a Kaprekar number.[1]
- a repdigit in decimal and hexatridecimal.
- a palindromic number in bases 10, 14 (51514), and 36 (RR36).
- the largest 3-digit decimal integer.
- the largest number in English not containing the letter 'o' in its name, when using short scale.
- A base-10 Harshad number because , a whole number
Other fields
- In some parts of the world, such as the UK and Commonwealth countries, 999 (pronounced as 9-9-9) is the emergency telephone number.
- 999 was a London punk band active during the 1970s.
- 999 is also the short name for the visual novel Nine Hours, Nine Persons, Nine Doors.
- 999 is the last 3 digit number.
References
- ^ "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02.
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