# Manuals/calci/ISINTEGER

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**ISINTEGER (Number)**

- is any number to test.
- ISINTEGER(), returns TRUE if the number is an Integer.

## Description

- This function is one of the group in ISFUNCTIONS.
- The IS FUNCTION is also known as data information functions, data inspection functions or data-testing functions.
- ISINTEGER function can be used to check the given value is integer or not.
- Here the number can be either positive or negative.
- This function gives the result as only TRUE or FALSE.
- The result is TRUE when the n value is Integer otherwise the result is FALSE.
- The argument can be blank, or it can contain data such as text, numbers, error values, logical values or any equations.
- This function will convert any numbers from text.
- For e.g. "20" is normally converted as a number 20.
- But in ISINTEGER("20") will return TRUE, because "20" will convert in to number.

## Safe Integer

**SAFEINTEGER (Number)**

- is to be tested as a secure integer.
- This function determines whether the provided value is a secure integer.
- A safe whole number is one that can be represented exactly by a double precision number.
- Safe integers consist of all integers from inclusive to inclusive.-(2^53 - 1)2^53 - 1
- ISSAFEINTEGER("15") = true
- ISSAFEINTEGER("15.34") = false

## Abundant Numbers

- Abundant number is a number for which the sum of its proper divisors is greater than the number itself.
- It is also called Excessive Number.
- The first Abundant number is 12.
- ISABUNDANTNUMBER(6) = false
- ISABUNDANTNUMBER(20) = true
- ISABUNDANTNUMBER(1..12) = false false false false false false false false false false false true

## Deficient Numbers

- Deficient number is a number for which the sum of divisors , or, equivalently, the sum of proper divisors (or aliquot sum) . The value − (or − ) is called the number's deficiency.
- ISDEFICIENTNUMBER(6) = false
- ISDEFICIENTNUMBER(1..10) = false true true true true false true true true true

## Examples

- ISINTEGER(15) = true
- ISINTEGER(-34) = true
- ISINTEGER(1/2) = false
- ISINTEGER("78") = true

## Related Videos

## See Also

## References