Carol Anne S. answered 06/05/19
MA in Linguistics, freelance writer, editor and translator
Hello there! The accepted minimum of words to make up a book is 60,000 words, but it is not a hard and fast rule. Also, the minimum words per page is usually around 250 words. I hope that helps.
p.s. I know this not from my studies in Linguistics but because I'm also a writer--though I haven't made it to novel length just yet!