4 (Number)

4 is a number. It's the number after 3 and before 5 in the Numberbet.

Origin
Its origin is unknown. Scientists and Numberologists theorize that 4 was made by the world's smartest man after an accident happened. His laboratory exploded, and what was left was the number 4. This man told congress to make 4 a letter. They felt that they had too many letters, so they made it a number.