Subtracting from 459999 its sum of digits (45), we obtain a palindrome (459954).
It is a happy number.
459999 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.
It is a de Polignac number, because none of the positive numbers 2k-459999 is a prime.
It is a Duffinian number.
459999 is strictly pandigital in base 7.
It is a plaindrome in base 10.
It is a nialpdrome in base 9.
It is a congruent number.
2459999 is an apocalyptic number.
459999 is an frugal number, since it uses more digits than its factorization.
459999 is an odious number, because the sum of its binary digits is odd.
The square root of 459999 is about 678.2322611023. The cubic root of 459999 is about 77.1943703556.
The spelling of 459999 in words is "four hundred fifty-nine thousand, nine hundred ninety-nine".