Is it safe to delete "root" user?

I have hosted one web application on a staging server where I have deleted "root" users from the database. I don't want to use a common name for superuser. I have also created another admin user(Same as root user).

After this change I have tested my application and did not find any issue. But I reviewed articles where people mentioned that they were getting errors after deleting the root user.

My queries are ,

• Is it safe to delete the root database?

• Will it create any issue in future if remove root user?

I am still doing testing on staging server. Once this poc get done , I am planning to delete the root user from the production server as well.
EDIT

This is a new web application which I am going to host on production server and there is no admin script running.

For administrative purposes, you need to have a SUPER user WITH GRANT OPTION, but the name ('root') does not matter. But...

• Are there any scripts that assume it is root?

• Such a user should be granted access only from localhost, thereby adding the OS security on top of that login.

• Do not give SUPER or WITH GRANT OPTION to any other user (without understanding the security remifications)

• Each application should have its own login into MySQL. That is, use root (or your replacement name) only for admin purposes, not for applications.

• Each application login should limit what it can touch. Commonly that is one database, hence GRANT ... ON dbname. ..., not ON .*. (There are exceptions and variations on this rule.)

StackExchange Database Administrators Q#273515, answer score: 4