Powers of a president:
Serve as commander in chief of the armed forces
Commission officers of the armed forces
Grant reprieves and pardons for federal offenses (except impeachment)
Convene Congress in special sessions
Receive ambassadors
Take care that the laws be faithfully executed
Wield the "executive power"
Appoint officials to lesser offices
(I'm not sure if this is what you needed, but I hope it helps...)
