999 (number)

Template:About Template:Refimprove 999 (nine hundred [and] ninety-nine or nine-nine-nine) is a natural number following 998 and preceding 1000. It is the largest 3-digit decimal integer.Template:Infobox number

In mathematics

$999 = 3^{3} \times 37$ , a Kaprekar number.^[1]
a repdigit in decimal and hexatridecimal.
a palindromic number in bases 10, 14 (515₁₄), and 36 (RR₃₆)..
the largest number in English not containing the letter 'o' in its name, when using short scale.
A base-10 Harshad number because $\frac{999}{(9 + 9 + 9)} = 37$ , a whole number

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. It is also the last number in English written without a comma, as numbers above 999 must require a comma (e.g. numbers starting from 1,000 or more).
999 is the number the late rapper Juice WRLD chose as his moto, he explains it as "999 is 666 (the devil's number flipped upside down) to resemble taking a bad/unpleasant situation and turning it upside down turning it into a better situation."