



Number 99

ninety nine

Properties of the number 99

Factorization 

3 * 3 * 11

Divisors 
1, 3, 9, 11, 33, 99

Count of divisors 
6

Sum of divisors 
156

Previous integer 
98 
Next integer 
100 
Is prime? 
NO

Previous prime 
97

Next prime 
101

99th prime 
523

Is a Fibonacci number? 
NO

Is a Bell number? 
NO

Is a Catalan number? 
NO

Is a factorial? 
NO

Is a regular number? 
NO

Is a perfect number? 
NO

Polygonal number (s < 11)? 
NO 
Binary 
1100011 
Octal 
143 
Duodecimal 
83 
Hexadecimal 
63 
Square 
9801 
Square root 
9.9498743710662 
Natural logarithm 
4.5951198501346 
Decimal logarithm 
1.9956351945975 
Sine 
0.99920683418635 
Cosine 
0.039820880393139 
Tangent 
25.092534979677 

Number 99 is pronounced ninety nine.
Number 99 is a composite number.
Factors of 99 are 3 * 3 * 11.
Number 99 has 6 divisors: 1, 3, 9, 11, 33, 99.
Sum of the divisors is 156.
Number 99 is not a Fibonacci number.
It is not a Bell number.
Number 99 is not a Catalan number.
Number 99 is not a regular number (Hamming number).
It is a not factorial of any number.
Number 99 is a deficient number and therefore is not a perfect number.
Binary numeral for number 99 is 1100011.
Octal numeral is 143.
Duodecimal value is 83.
Hexadecimal representation is 63.
Square of the number 99 is 9801.
Square root of the number 99 is 9.9498743710662.
Natural logarithm of 99 is 4.5951198501346
Decimal logarithm of the number 99 is 1.9956351945975
Sine of 99 is 0.99920683418635. Cosine of the number 99 is 0.039820880393139. Tangent of the number 99 is 25.092534979677



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