Number Utilities

Digital Root

Reduces any integer to a single digit by repeatedly summing its digits until only one remains. Access via MCP in Cursor or Windsurf, or call GET /v1/number/digital-root with your number. For 789, it calculates 7+8+9=24, then 2+4=6. Digital roots have applications in numerology, checksum validation, and mathematical analysis patterns.

API Endpoint

GET /v1/number/digital-root

Code Examples

curl "https://tinyfn.io/v1/number/digital-root" \
  -H "X-API-Key: YOUR_API_KEY"

const response = await fetch('https://tinyfn.io/v1/number/digital-root', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);

import requests

response = requests.get('https://tinyfn.io/v1/number/digital-root',
    headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)

Use via MCP

Add to your AI agent

Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's number tools:

{
  "mcpServers": {
    "tinyfn-number": {
      "url": "https://tinyfn.io/mcp/number",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Learn more about MCP setup →

Related Tools

FAQ

What is a digital root and how is it calculated?

The digital root is the single digit obtained by repeatedly summing all digits of a number until only one digit remains. For example, 456 becomes 4+5+6=15, then 1+5=6.

Can I use digital root calculation in my MCP-enabled AI coding assistant?

Yes, the digital root tool works in any MCP-compatible editor like Cursor, Claude Code, or Windsurf. Your AI agent can calculate digital roots during code analysis or mathematical operations.

What happens with negative numbers or zero in digital root calculation?

Zero returns 0 as its digital root. Negative numbers use the absolute value for calculation, so -123 processes as 123 and returns 6.

How do I call the digital root API endpoint directly?

Send a GET request to /v1/number/digital-root with the number parameter. The response includes the original number, digital root result, and calculation steps.

Are there practical uses for digital roots beyond numerology?

Digital roots help in checksum algorithms, divisibility testing (digital root of 9 indicates divisibility by 9), and pattern recognition in mathematical sequences and data validation.

Try Digital Root Now

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