\[\boxed{\mathbf{1059}\mathbf{.}}\]
\[1)\ P_{5} = 5! = 5 \bullet 4 \bullet 3 \bullet 2 = 120;\]
\[2)\ P_{7} = 7! = 7 \bullet 6 \bullet 5 \bullet 4 \bullet 3 \bullet 2 =\]
\[= 5\ 040;\]
\[3)\ P_{9} = 9! =\]
\[= 9 \bullet 8 \bullet 7 \bullet 6 \bullet 5 \bullet 4 \bullet 3 \bullet 2 =\]
\[= 362\ 880;\]
\[4)\ P_{8} = 8! =\]
\[= 8 \bullet 7 \bullet 6 \bullet 5 \bullet 4 \bullet 3 \bullet 2 = 40\ 320.\]