1009 in Roman Numerals

1009

MI (subtracted)X

one thousand nine

How MIX is formed

PlaceValueSymbols
Thousands1000M
Units9I (subtracted)X
Total1009MIX

MIX is written one place at a time, from the largest to the smallest: M (1000) + IX (9) = 1009.

IX is the only subtraction: the I before the X takes away 1, so IX = 9.

Common mistakes

Wrong: MVIIII

Why isn't 1009 written as MVIIII?

A symbol can't be repeated four times in a row. 9 is IX (10 − 1), not VIIII, so 1009 is MIX.

Numbers near 1009

Properties of 1009

Prime factors
1009
Divisors
1, 1009
Even or odd
Odd
Prime number
Yes
Letters in MIX
3

1009 is a prime number: it can only be divided by 1 and by itself.

1,009,000 in Roman numerals

With a bar over it (vinculum), M̅I̅X̅ means 1009 × 1,000 = 1,009,000. How Roman numerals work

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