The BitAnd command returns the bitwise and of the specified integers.

$\mathrm{with}\left(\mathrm{MmaTranslator}\left[\mathrm{Mma}\right]\right)\:$

$\mathrm{BitAnd}\left(8\,12\right)$

$8$

$\mathrm{with}\left(\mathrm{MmaTranslator}\right)\:$

$\mathrm{FromMma}\left(\mathrm{`BitAnd[8,\; 12]`}\,\mathrm{evaluate}\right)$

$8$