Definitions from Wiktionary (happy number)
▸ noun: (mathematics) Any number that eventually reaches 1 after some number of iterations of replacing each of its digits by the sum of that digit's squares.
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▸ noun: (mathematics) Any number that eventually reaches 1 after some number of iterations of replacing each of its digits by the sum of that digit's squares.
Similar:
Perfect totient number,
perfect number,
Multiplicative function,
Squared triangular number,
digit sum,
Sum-product number,
Divisor summatory function,
geometric series,
Sylvester's sequence,
Lucky number,
more...
▸ Words similar to happy number
▸ Usage examples for happy number
▸ Idioms related to happy number
▸ Wikipedia articles (New!)
▸ Words that often appear near happy number
▸ Rhymes of happy number
▸ Invented words related to happy number