It kind-of-is, it's just not particularly well-formed/ambiguous linguistically.

A bit like 99 in French: quatre-vingt-dix-neuf

four twenties and ten and nine

I knew the Danes where counting in a crazy way but I didn't know the French did this as well.

One more reason I'm happy English is the most common international language I guess.

Number systems by complexity: http://www.sf.airnet.ne.jp/ts/language/number.html

According to wikitionary [1] "four score and seven" was a commonplace way of saying "eighty seven" in 19th c. English.

[1] https://en.wiktionary.org/wiki/four_score_and_seven_years_ag...

Peano says it is a valid number.