▁film ▁was ▁finan cially ▁successful ▁at ▁the ▁box ▁office , ▁gross ing ▁$ 3 , 2 2 1 , 1 5 2 ▁in ▁the ▁United ▁States ▁despite ▁only ▁a ▁limited ▁the atr ical ▁release . ▁It ▁has ▁sold ▁stead ily ▁on ▁DVD . ▁Pi ▁was ▁the ▁first ▁ever ▁film ▁to ▁leg ally ▁be ▁made ▁available ▁for ▁download ▁on ▁the ▁Internet . ▁ ▁Crit ical ▁reception ▁The ▁film ▁was ▁well ▁received . ▁On ▁Rotten ▁Tomatoes , ▁the ▁film ▁has ▁an ▁ 8 8 % ▁appro val ▁rating ▁based ▁on ▁ 5 6 ▁reviews ▁with ▁an ▁average ▁rating ▁of ▁ 7 . 3 / 1 0 . ▁The ▁website ' s ▁critical ▁cons ensus ▁reads : ▁" D ram atically ▁g ri pping ▁and ▁fright ening ly ▁smart , ▁this ▁Lyn ch ian ▁thr iller ▁does ▁w onders ▁with ▁its ▁unlikely ▁subject ▁and ▁sho est ring ▁budget ." ▁On ▁Met ac rit ic , ▁the ▁film ▁has ▁a ▁rating ▁of ▁ 7 2 ▁out ▁of ▁ 1 0 0 ▁based ▁on ▁ 2 3 ▁reviews , ▁indicating ▁" gener ally ▁favor able ▁reviews ". ▁Roger ▁E bert ▁gave ▁the ▁film ▁three ▁and ▁a ▁half ▁stars ▁out ▁of ▁four , ▁writing : ▁ ▁James ▁Ber ardin elli ▁gave ▁the ▁film ▁three ▁out ▁of ▁four ▁stars , ▁writing : ▁ ▁Th emes ▁ ▁Mathemat ics ▁Pi ▁features ▁multiple ▁references ▁to ▁mathematics ▁and ▁mathematical ▁theories . ▁For ▁instance , ▁Max ▁finds ▁the ▁golden ▁spir al ▁occurr ing ▁everywhere , ▁including ▁the ▁stock ▁market . ▁Max ' s ▁belief