2006My question is this:
Numbers for the most part are adjectives, that is their part of speech.
Yes, they often quantify nouns, but they also function as nouns and pronouns. In fact, dictionaries list their primary function as nouns.
eg. She can count to five.
Yet most adjectives are one word. But that doesn't mean anything, and there are many compound adjectives.
eg. an extremely-well-written book
Why are numbers though written as several words, sometimes stringing out quite far. For example 5,402 would be read as "five thousand, four hundred and two". But how else would you write it? And 5,402 by itself is a noun.
Thanks for the help.