9.2

9.2 is the number of a thing, person or creature that can't be killed or defeated easily, something/someone that's very hard to get rid of.

Example 1

Guy: Oh wow that wrestler is a total 9.2, she's never lost against anyone.

Example 2
Other guy: Dude I just can't get these dandelions out of my garden, they've started growing in the concrete!

Guy:They're total 9.2s