I'm not sure that I'd call dynamic languages like Python safer, it depends on context. Compared to C/C++ you lose static typechecking but gain a safer memory model.
Oh, I wasn't aware that you only talked about those. MUMPS is also not for systems programming, as far as I know.
To nitpick a bit, compiled or not is more a property of the implementation than of the language itself. Of course, some languages are more commonly compiled than others. But, don't Facebook have a PHP compiler?
