Write a program to check whether a number is Krishnamurthi number or not

Question

A krishnamurthi number is the one that is equal to the sum of the factorial of its digits.

Answer 1

https://code.sololearn.com/cCWT6Qy5VQqY/?ref=app

Answer 2

I could of course ask google, but if you answer here it will be a good information for every sololearner passing by :
Why is it called 'Krishnamurthi number ' ?