√404 = 20.0997512422. 404 is not a perfect square; the result is irrational.

Is 404 a perfect square?

No, 404 is not a perfect square. Its square root is irrational.

What is 20.0997512422 squared?

20.0997512422 squared is approximately 404. (20.0997512422)² ≈ 404

Instant answer with step-by-step solution

√404 = 20.0997512422

√404 = 20.0997512422

⚠ 404 is not a perfect square — result rounded to 10 significant figures

We need to find √404 — a number that when multiplied by itself equals 404.
404 is not a perfect square. Its square root is irrational.
It falls between √400 = 20 and √441 = 21.
Using the formula √N = N^(1/2): √404 = 404^0.5 = 20.0997512422
Verification: 20.0997512422 × 20.0997512422 ≈ 404 ✓ (rounded to 10 significant figures)

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