3969

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Number

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

$3^4 \times 7^2$

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

$3969 = 63 \times 63$

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