hyperdeficient

English

Etymology

hyper- +‎ deficient

Pronunciation

• Rhymes: -ɪʃənt

Adjective

hyperdeficient (comparative more hyperdeficient, superlative most hyperdeficient)

1. Extremely deficient.
2. (mathematics, number theory) Having the property that, for some positive integer k, δk(n) > 0, where δk(n) = n(k+1) +(k-1) –kσ(n) and σ(n) is the sum of the positive divisors of n.

Usage notes

In the case where k=1, a number is considered to be deficient.