Ah thats good, a guy at work has the note 4 and cant even disable the stock email app (the disable buttons greyed out) and he was complaining that you cant disable other stuff. That had me worried...
My old S4 I could at least disable what I didn't want/use.
You can disable apps without root, using the debloating tool. Works on any Android phone.
http://www.rootjunky.com/debloater-tool-android/