TITLE: Good books on arithmetic functions?
QUESTION [5 upvotes]: As I was studying the Möbius $\mu$ function and Gram series,
I got myself some pretty nice books:
Ribenboim - The New Book of Prime Number Records
Apostol - Introduction to Analytic Number Theory
Niven, Zuckerman, Montgomery - An Introduction to the Theory of Numbers
Iwaniec and Kowalski - Analytic Number theory
All of them deal with the Möbius $\mu$ function.
But none of them dealt with the subject in details other than giving a few theorems and problems...
So I would like to know, If you guys know of some good books that deal exclusively with arithmetic functions?

REPLY [2 votes]: (As I can't comment)
If you understand German, Springer published last year a translated version of Paul McCarthy's book - "Arithmetische Funktionen" (ISBN: 978-3-662-53731-2).