Phrase guide

deficient number

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A number that is greater than the sum of all of its divisors except itself.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, number-theory, sciences

Examples

  • The factors of 22 are 1, 2 and 11 and 22, and 1 + 2 + 11 = 14, which is less than 22, so 22 is a deficient number.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

13 source translations are retained for this English entry.

  • Chinese Mandarin: 虧數 /亏数 — deficient number
  • Chinese Mandarin: 不足數 /不足数 — deficient number
  • Chinese Mandarin: 缺數 /缺数 — deficient number
  • Finnish: vajaa luku — deficient number
  • French: nombre déficient — deficient number
  • German: defizienten Zahl — deficient number
  • Japanese: 不足数 (fusokusū) — deficient number
  • Korean: 부족수 (bujoksu) — deficient number
  • Latin: numerus diminutivus — deficient number
  • Polish: liczby deficytowa — deficient number
  • Polish: liczba niedostateczna — deficient number
  • Spanish: número defectivo — deficient number
  • Swedish: defekt tal — deficient number