In todays modern notation of Roman numerals they represent: 1990
MCMXC
The Roman numeral MCMXC represents the number 1990
16
LV
D
V
That is 29.
MCXVII
10 = X in Roman numerals
3409 in Roman numerals is MMMCDIX
DCCCXXXII in roman numeral is 832.
VI = 6