999 (nine hundred [and] ninety-nine) is the natural number following 998 and preceding 1000. It is the largest 3-digit integer.
In mathematics 999 is a palindrome number that is a repdigit. It is also a Kaprekar number and a 3-Kaprekar number, a Harshad number, a trimorphic number, and the smallest sum of three 3-digit prime numbers taken from a zeroless pandigital number (149 + 263 + 587 = 999). 999 can be written as the sum of three consecutive cuban primes which is 271 + 331 + 397.
999 can be used as a divisor to generate 3-digit decimal recurrences. For example, 123 / 999 = 0.123123123... .
The radical circle of the mixtilinear incircles has a center with trilinear center function
and 999 represents as the Kimberling center , which is the center of the radical circle.
The largest non-titanic palindromic prime contains a total of 999 digits.
(68 * 10999 + 7)/3 and 10999 + 7 is prime.
In other fields
999: Nine Hours, Nine Persons, Nine Doors is a Japanese visual novel and adventure game created by Chunsoft.Chunsoft (2009). 999: Nine Hours, Nine Persons, Nine Doors (Nintendo DS). Spike. 999 is a emergency telephone number in a number of countries which include Bahrain, Bangladesh, Botswana, the Cook Islands, Eswatini, Ghana, Guernsey, Hong Kong, the Republic of Ireland, the Isle of Man, Jersey, Kenya, Macau, Malaysia, Mauritius, Niue, Poland, Qatar, Sudan, Saudi Arabia, Singapore, Trinidad and Tobago, Seychelles, Uganda,\ the United Arab Emirates, the United Kingdom, and Zimbabwe. In many video games, 999 is the maximum score it could display.
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