The Roman numeral MMXCIX represents the number 2,099. Here’s the breakdown of this Roman numeral:

• MM represents 2,000.
• XC represents 90.
• IX represents 9.

So, when you add these values together, you get:

MM (2,000) + XC (90) + IX (9) = 2,000 + 90 + 9 = 2,099.

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