Some of the Enchantments of Mjolnir is
Worthiness, Flight, Teleport, Dimension travel, Time travel, Energy absorption/manipulation, Weather manipulation, Shields barriers, Magical energy charged blows, Enhanced God blast, Thermal blast, Antiforce blast, Resurection of dead, Power negation/ manipulation and life soul manipulation to mention some.
Perhaps the most known of all weapons of myths !
Mjolnir may absorb 20 percent of all energy in the universe, blow up hole planets with a blast and deliver blows enhanced by magical energy shattering everything it hits.
He may fly at light speed and teleport in an instent across the universe.