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189

Number 189: Properties, Factors, and Mathematical Facts

Short answer

The number 189 is an odd composite number with 8 positive divisors. Its prime factorization is 3³ × 7. It is also a deficient number, which gives it several notable mathematical relationships.

Is 189 prime?

ClassificationCompositeParityOddDivisor count8AbundanceDeficient

What is the prime factorization of 189?

Prime factorization

189 =
3 cubed times 7
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What are the divisors of 189?

Divisor count

8

Divisor sum

320

Proper divisor sum

131
  • 1
  • 3
  • 7
  • 9
  • 21
  • 27
  • 63
  • 189
Learn more →Learn more →

How is 189 classified?

Prime

CompositeLearn more →

Perfect square

No

Perfect cube

No

Fibonacci

No

Triangular

No

Power of two

No
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How is 189 represented in other numeral systems?

Decimal

189

Binary

10111101
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Octal

275

Hexadecimal

BD
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Roman

CLXXXIXLearn more →

In words

one hundred eighty nine

Roots and powers

Square root

13.747727 Approximate

Cube root

5.738794 Approximate

Nearest lower square

169

Nearest higher square

196

Nearest lower cube

125

Nearest higher cube

216

What are the digit properties of 189?

Digit count

3

Digit sum

18Learn more →

Digit product

72

Digital root

9

Reversed number

981

Which numbers are related to 189?

188· Previous190· Next181· Previous prime191· Next prime3· Prime factor7· Prime factor169· Lower square196· Higher square171· Previous triangular378· Double981· Reverse

Why these results are true

  • 189 is composite because it has positive divisors other than 1 and itself.

Compare this number

FAQ for 189

Is 189 prime?
No
What is the prime factorization of 189?
3³ × 7
Is 189 a perfect square?
No
What is 189 in binary?
10111101
What is 189 in Roman numerals?
CLXXXIX

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