Can you crack the code used to transform the following numbers and come up with the final number?

2461289=18
11029447=1
6332516=333561
412961044=4141
2234=23
357924242=222
139=9
4344199=?

(hint by levik: the encoding is such that it will only work on some numbers, not all integers)

The required answer is 4444.

Edited on January 22, 2008, 3:51 am

Posted by K Sengupta on 2008-01-22 03:50:30