495 - Kaprekar Constant (3-digit)
495 is the 3-digit version of Kaprekar’s number trick.
Why this number matters
It is an easy entry point before trying the 4-digit 6174 routine.
Background / history
Like 6174, it comes from D. R. Kaprekar’s digit process work.
Simple example
Take 352: 532-235=297, then 972-279=693, then 963-369=594, then 954-459=495.
Key Facts
- Fixed point in the 3-digit Kaprekar routine
- Companion to the 4-digit constant 6174
Fun fact
Once you hit 495, repeating the process keeps giving 495.