Often people recommend that you divide your stitches evenly among the needles, so that would mean you'd have 17 stitches per needle (if you have four needles for live stitches and one needle to knit with).
However, unless the pattern specifically calls for a certain number of stitches per needle, I wouldn't sweat it. After all, if there's no reason to be counting stitches and stressing yourself out about how many stitches you should have per needle, why worry about it? Divide them in such a way that your stitches won't fall off and so that you have somewhat equal amounts on each needle . . . . and then get to the most important (and fun) part: knitting!
I very rarely divide my stitches evenly. Why would I want to waste time counting and moving stitches around when for most patterns, it doesn't even matter? I want to knit! I don't want to worry about whether stitches are evenly spaced across my needles! What nonsense!