It means you slide the decimal point that number of places to the right. 4.41e+008 means 441000000.0. So if you want 44100 you could say 4.41e+004.
OK. i get the picture But why was not my message playing the sound backwards? (i paste below my original message just in case)
I know about using phasor~ but i was not interested on changing the frequency "on the fly"
--------- oringinal message ------------- i pass this message 44100, 0 1000
and it plays backwards 1 sec but, whats the realation between this and the previous message, i mean i supose i need to pass something like this 4.41e+008, 1 1e+007
to play 2 secs backwards on normal frequency. But it doesnt sound at all. THen i realised that if i do this : 1, 44100 1000 and 44100, 1 1000 it works fine both backwards and forward.