thirty-nine vs ixl

thirty-nine and ixl both are adjectives.

Word	Noun	Adjective	Verb	Adverb
thirty-nine	No	Yes	No	No
ixl	No	Yes	No	No

As adjectives, thirty-nine and ixl are synonyms defined as:

Other synonyms of thirty-nine include 39.

thirty-nine (adjective)	ixl (adjective)
being nine more than thirty	being nine more than thirty