What Does Name Maleah Mean. You have psychic power. You can carry on for others with joy. You have a receptive nature and may bear burdens for others. You are pragmatic, thorough, strong-willed, practical and stubborn at times. You are hard working, often martyr to duty.
M in Roman numerals means Mille or thousand. But the M I think you are seeing, if you are also seeing K, is Mega. Mega has two different meanings, as does the K for Kilo. K comes from the metric system, where it means 10^3 or 1000. But in computer, K = 2^10, or 1024. M, similarly, stands for 2^20 or 1,048,576.
The big differences between Roman and Arabic numerals (the ones we use today) are that Romans didn't have a symbol for zero, and that numeral placement within a number can sometimes indicate subtraction rather than addition. I. The easiest way to note down a number is to make that many marks - little I's. Thus I means 1, II means 2, III means 3. However, four strokes seemed like too many.... So the Romans moved on to the symbol for 5 - V. Placing I in front of the V  or placing any smaller number in front of any larger number  indicates subtraction. So IV means 4.