superperfect.
Being or relating to a class of positive integers satisfying σ²(n)=σ(σ(n))=2n,, where σ is the divisor function. They are a generalization of perfect numbers.
Meaning & usage
Being or relating to a class of positive integers satisfying σ²(n)=σ(σ(n))=2n,, where σ is the divisor function. They are a generalization of perfect numbers.
Where this word comes from
From super- + perfect, coined by Suryanarayana in 1969.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.