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

209991 (number)

209991 is an odd 6-digits composite number following 209990 and preceding 209992. In scientific notation, it is written as 2.09991 × 10^5. The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors. There are 139992 positive integers (up to 209991) that are relatively prime to 209991.

Interesting facts

209991 has 4 divisors, whose sum is 279992
The reverse of 209991 is 199902
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 6
Sum of Digits 30
Digital Root 3

Name

Name	two hundred nine thousand nine hundred ninety-one

Notation

Scientific notation	2.09991 × 10^5
Engineering notation	2.09991 × 10^3

Prime Factorization of 209991

Prime Factorization 3 × 69997

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	209991	Product of the distinct prime numbers

The prime factorization of 209991 is 3 × 69997. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 3, 66, 4, 128, 25, 6738, 778, 33169, 1419, 891192, 927483, 6073508, 1385878, 5411814, 10442860, 840842315, 13970860, 2097681993, 8677797972

Basic calculations (n = 209991)

Multiplication

n×y

n×2	419982
n×3	629973
n×4	839964
n×5	1049955

Division

n÷y

n÷2	104995.5
n÷3	69997
n÷3	52497.75
n÷5	41998.2

Exponentiation

n^y

n²	44096220081
n³	9259809351029271
n⁴	1.944476625432E+21
n⁵	4.0832259105109E+26

Nth Root

^y√n

²√n	458.24774958531
³√n	59.438370383793
⁴√n	21.406722065401
⁵√n	11.599523159499

Divisors of 209991

1, 3, 69997, 209991

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-209990	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 209991 can be divided by 4 positive divisors. The sum of these divisors (counting 209991) is 1, the average is 0.25.

Base conversion 209991

Base	System	Value
2	Binary	110011010001000111
3	Ternary	101200001110
4	Quaternary	303101013
5	Quinary	23204431
6	Senary	4300103
8	Octal	632107
10	Decimal	209991
12	Duodecimal	a1633
16	Hexadecimal	33447
20	Vigesimal	164jb
36	Base36	4i13

Cryptographic Hash Functions

md5	dee71973ace984e7e3658ff077d2f12e
sha1	ba68d174d5fa2b81d379ed56f79aa7bb8a841dc3
sha256	a6df2eadd823eb6bf83bbd5c7c4837e1d2d7236fc4fc8c4e02536101b83cf540
sha512	bb1c1425df1afbbde4eaf6c66f04d62700e5c5414ee8768e03602d0a4277b84e3c2dfe9d242d190170cd1238cd4c267425edf1887fd9a73bf842c3bb600ea2e0
ripemd-160	83b6485414322d5fb5fd940d1956bfd5a14f443b

209991 as geometric shapes

Circle

Radius = n

Diameter	419982
Circumference	1319412.3658399
Area	138532361057.55

Sphere

Radius = n

Volume	3.8787398707781E+16
Surface area	554129444230.19
Circumference	1319412.3658399

Square

Length = n

Perimeter	839964
Area	44096220081
Diagonal	296972.12017629

Cube

Length = n

Surface area	264577320486
Volume	9259809351029271
Space diagonal	363715.0811322

Equilateral Triangle

Length = n

Perimeter	629973
Area	19094223400.508
Altitude	181857.5405661

Triangular Pyramid

Length = n

Surface area	19094223400.508
Volume	1.0912789974346E+15
Height	98990.70672543