Square roots·√139
√139 =
√139
≈ 11.789826

Square root of 139 — 11.789826 (√139)

Irrational

The square root of 139 is about 11.789826, or exactly √139. It lies between 11 and 12.

As a decimal
≈ 11.789826
Simplified surd
√139 = √139
Between
11 < √139 < 12
Squared
139² = 19321
Cube root
∛139 ≈ 5.180101

Nearby numbers

√136 = 2√34√137 = √137√138 = √138√140 = 2√35√141 = √141√142 = √142

From 1 to 200

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How to read this

  • The decimal is rounded; the surd form is the exact value.
  • Pulling out a square factor simplifies the surd — √50 = 5√2.
  • If the number is not a perfect square, the decimal never ends (irrational).
  • Knowing which two integers it sits between is enough to estimate in your head.

Frequently asked questions

Q. What is the square root of 139?

About 11.789826, or exactly √139.

Q. Can the surd be simplified?

No — there is no square factor to pull out.

Q. Between which integers does it fall?

Between 11 and 12.

Q. What is the cube root of 139?

About 5.180101.