Your number, one digit away
One digit away
One change could reach Singular.
Your number
3,921
Exceptional · Top 2.74%
Position 2: 9 → 3 · +384 points.
Gained: Triangular number, Digit sum 9, Descending segment, 3 distinct digits, Harshad number, Happy number, Repeated digit.
Lost: Digit sum 15, Semiprime, 4 distinct digits.
35 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.