People have a misconception that Islam is 1400 years old and that Prophet Muhammad (pbuh) is the founder of this religion. Islam existed since time immemorial, ever since man first set foot on this earth. Prophet Muhammad (pbuh) was not the founder of Islam. He was the last and final Messenger of Almighty God.
If you think any other religion is older than islam, then comment below and explain the origin.
Any questions regarding islam, please do ask via commenting.