3969

Number
$3969$ (three thousand, nine hundred and sixty-nine) is:


 * $3^4 \times 7^2$


 * The $63$rd square number after $1$, $4$, $9$, $16$, $25$, $36$, $\ldots$, $3249$, $3364$, $3481$, $3600$, $3721$, $3844$:
 * $3969 = 63 \times 63$