According to a survey of United Nations University for Environment and Human Security it found out top 30 safest country in the world.

Here I am sending the top 4 safest country that are:

Rank   Country   Vulnerability
1   Qatar           30.13%
2   Malta           3 7. 76 %
3   Saudi Arabia 3 7. 5 5 %
4   Barbados     35.27%

You can find more 26 countries from http://www.countryranker.com/30-safest-countries-with-least-natural-disaster-risk/