This is the 8266th most frequent Turkish word.
miyim
"Miyim" means "Am I?" in English.
This usage of 'mıyım' is to form a yes/no question about oneself.
Ben doğru muyum?
Am I correct?
Here, 'mıyım' is used to pose a question regarding one's opinion or stance on a matter.
Acaba bu konu hakkında haklı mıyım?
Am I right about this topic, I wonder?
In this case, 'mi' (in 'mıyım') is part of a question blended with another suffix to inquire about timing or appropriateness of one's actions.