Question: What is the sum of the first nine odd numbers greater than 1?

To find the sum of the first nine odd numbers greater than 1, we start with the first odd number, 3, and progressively add the next odd numbers. The nine odd numbers are: 3, 5, 7, 9, 11, 13, 15, 17, and 19. To calculate the sum, we add these numbers together: 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 100. So, the sum of the first nine odd numbers greater than 1 is 100.

Question: What is the smallest power of 9 that is greater than 100?

To find the smallest power of 9 greater than 100, we can start by calculating the powers of 9: 9^1 = 9, 9^2 = 81, 9^3 = 729. After evaluating some powers, we see that 9^3 is 729, which is the first power exceeding 100. Therefore, the smallest power of 9 greater than 100 is 9^3.

Question: What is the largest prime factor of 9?

The number 9 can be factored into 3 * 3, where 3 is the only prime factor. Since there are no larger prime factors, the largest prime factor of 9 is 3.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

9 (number)

9 is an odd 1-digits composite number following 8 and preceding 10. In scientific notation, it is written as 9. The sum of its digits is 9. It has a total of 2 prime factors and 3 positive divisors. There are 6 positive integers (up to 9) that are relatively prime to 9.

Interesting facts

9 has 3 divisors, whose sum is 13
The reverse of 9 is 9
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 1
Sum of Digits 9
Digital Root 9

Name

Name	nine

Notation

Scientific notation	9
Engineering notation	9

Prime Factorization of 9

Prime Factorization 3 × 3

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	3	Product of the distinct prime numbers

The prime factorization of 9 is 3 × 3. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 6, 50, 100, 683, 642, 4641, 3292, 13767, 65531, 276887, 458267, 9218984, 7964691, 78473461, 16110473, 749066399, 862939663, 7556550003, 9673126856

Basic calculations (n = 9)

Multiplication

n×y

n×2	18
n×3	27
n×4	36
n×5	45

Division

n÷y

n÷2	4.5
n÷3	3
n÷3	2.25
n÷5	1.8

Exponentiation

n^y

n²	81
n³	729
n⁴	6561
n⁵	59049

Nth Root

^y√n

²√n	3
³√n	2.0800838230519
⁴√n	1.7320508075689
⁵√n	1.5518455739154

Divisors of 9

1, 3, 9

3 divisors

τ	Total Divisors	3	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-8	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.33333333333333	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	3	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 9 can be divided by 3 positive divisors. The sum of these divisors (counting 9) is 1, the average is 0.33333333333333.

Base conversion 9

Base	System	Value
2	Binary	1001
3	Ternary	100
4	Quaternary	21
5	Quinary	14
6	Senary	13
8	Octal	11
10	Decimal	9
12	Duodecimal	9
16	Hexadecimal	9
20	Vigesimal	9
36	Base36	9

Cryptographic Hash Functions

md5	45c48cce2e2d7fbdea1afc51c7c6ad26
sha1	0ade7c2cf97f75d009975f4d720d1fa6c19f4897
sha256	19581e27de7ced00ff1ce50b2047e7a567c76b1cbaebabe5ef03f7c3017bb5b7
sha512	0dc526d8c4fa04084f4b2a6433f4cd14664b93df9fb8a9e00b77ba890b83704d24944c93caa692b51085bb476f81852c27e793600f137ae3929018cd4c8f1a45
ripemd-160	b21ffbb290fb266e77182797ba316f6fd920dcfa

9 as geometric shapes

Circle

Radius = n

Diameter	18
Circumference	56.548667764616
Area	254.46900494077

Sphere

Radius = n

Volume	3053.6280592893
Surface area	1017.8760197631
Circumference	56.548667764616

Square

Length = n

Perimeter	36
Area	81
Diagonal	12.727922061358

Cube

Length = n

Surface area	486
Volume	729
Space diagonal	15.58845726812

Equilateral Triangle

Length = n

Perimeter	27
Area	35.07402885327
Altitude	7.7942286340599

Triangular Pyramid

Length = n

Surface area	35.07402885327
Volume	85.913473914166
Height	4.2426406871193