Step 1: Divide the number into separate digits:
34049 => 3 4 0 4 9
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
3 to 4 = 1
4 to 0 = 4
0 to 4 = 4
4 to 9 = 5
9 to 3 = 6
Step 3: Combine the filters to a string:
1 4 4 5 6 = 14456