The Roman number MMIX corresponds to the arabic number 2009.
There is no common alternative notation for this number.
When you see the number MMIX in a book or on a building, you know that it was written or built in the year 2009.
You are looking for acronyms beginning with MM? Here is our list with acronyms starting with MM.
Did you know that numbers in this system are represented by combinations of letters from the Latin alphabet?
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