Do you know What is a

**Spy Number?**If you are in an opinion that it must be a number which secretly conveys information about other numbers like a spy, then you are absolutely wrong.## What is a Spy Number?

**Definition of a Spy number:**A spy number is that positive integer, whose sum of the digits is equal to the product of its digits. That is,

**Sum of its digits = Product of its digits**

__Example:__**1421**is a Spy number.

Sum = 1 + 4 + 2 + 1 = 8 and

Product = 1 × 4 × 2 × 1 = 8

We observe that sum of the digits of 1421 is equal to the product of the digits of 1421. Therefore, 1421 is called a Spy number.

This is how you can check whether a given number is a spy number or not.

**Some other examples of Spy Number:**22, 123, 321, 1241, 1124, 1142 etc.

You can watch the video here:

**Spy numbers List**

Below is the list of

**Spy numbers between 1 and 10000.**

__ICSE Related links____Chapter-wise Quiz/MCQ/Test:__

ICSE Chapter wise Quiz For Class 6

ICSE Chapter wise Quiz For Class 7

ICSE Chapter wise Quiz For Class 8

ICSE Chapter wise Quiz For Class 9

ICSE Chapter wise Quiz For Class 10

__Sample Papers:__Sample Papers For Class 6

Sample Papers For Class 7

Sample Papers For Class 8

Sample Papers For Class 9

Sample Papers For Class 10

__CBSE Related links__

__Chapter-wise Quiz/MCQ/Test:__

**CBSE Chapter wise Quiz For Class 6**

CBSE Chapter wise Quiz For Class 7

CBSE Chapter wise Quiz For Class 8

CBSE Chapter wise Quiz For Class 9

CBSE Chapter wise Quiz For Class 10

__Sample Papers:__CBSE Sample Papers For Class 6

CBSE Sample Papers For Class 7

CBSE Sample Papers For Class 8

CBSE Sample Papers For Class 9

CBSE Sample Papers For Class 10

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