l totient of 9
Enter n for totient

totient of 9

Answer
φ(9) = 6

↓Steps Explained:↓



Calculate φ(9)

This is known as the totient

Calculate factors for 9

Factors for 9 are 1,3,9

Factors < 9 with 1 as common factor

#Factor ListMatching Factors Totient List?
111Y
21,21Y
31,31,3N
41,2,41Y
51,51Y
61,2,3,61,3N
71,71Y
81,2,4,81Y

Build totient list

1,2,4,5,7,8

Final Answer

φ(9) = 6

Related Calculators:  Prime Numbers  |  Factorization  |  Fraction Cancellation Property