Common
Narcissistic number
Concept in number theory
Narcissistic number
In number theory, a narcissistic number (also known as a pluperfect digital invariant (PPDI), an Armstrong number (after Michael F. Armstrong) or a plus perfect number) in a given number base b {\displaystyle b} is a number that is the sum of its own digits each raised to the power of the number of digits.
Open boosters, collect cards and trade them. Free to play.
Play for free