4879

Number
$4879$ (four thousand, eight hundred and seventy-nine) is:


 * $7 \times 17 \times 41$


 * The $11$th Kaprekar number after $1$, $9$, $45$, $55$, $99$, $297$, $703$, $999$, $2223$, $2728$:
 * $4879^2 = 23 \, 804 \, 641 \to 238 + 04641 = 4879$