Little Red Number on Ical Icon on dock

I have a little red circle at the upper right hand corner of my Ical Icon on the dock. It is the same as the number that appears when I have 4 emails waiting for me in Mail. I don't publish my calendar, nor do I have any alarms, nor do I have any events of merit. I just use it as a desk calendar. How do I get rid of the Four in the circle? Looked everywhere for this answer.