I noticed that the Iokharic character for the numerals from 2 to 9 bear close
resemblances to certain letters. As such, I decided that those characters may
have been chosen because the corresponding letter was the first in the word
for that number.

The resulting numeral names are:
1         ir         (from Dragon Magazine)
2         daan
3         tturl
4         qarn
5         kluush
6         wen
7         svogne
8         faeln
9         jinga