I dont think we ever learn Naruto's favorite number, (unless it's in a filler episode that i don't remember). however i would imagine his favorite number is nine, because he has the nine tails sealed inside him.
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9 of course or 1 cuz he wants to be the hokage and the hokage is number one in the village but nine cuz he has nine tails
The blood of 1000 innocent souls.
narutos registration is 012607
Ramen. Not just any ramen, miso ramen, usually with extra chashu (pork). Somtimes he even gets ramen with everything on it.
He does not have a middle name.
His favorite color is Green and His favorite number is 8