Disarium Number (Special Numbers Series #3)

7 kyu
Disarium Number (Special Numbers Series #3)

Definition
Disarium number is the number that The sum of its digits powered with their respective positions is equal to the number itself.

Task
Given a number, Find if it is Disarium or not .

Warm-up (Highly recommended)
Playing With Numbers Series
Notes
Number passed is always Positive .
Return the result as String
Input >> Output Examples
disariumNumber(89) ==> return "Disarium !!"
Explanation:
Since , 81 + 92 = 89 , thus output is "Disarium !!"
disariumNumber(564) ==> return "Not !!"
Explanation:
Since , 51 + 62 + 43 = 105 != 564 , thus output is "Not !!"


const disariumNumber = n => {
 let str = (''+n).split('');
 let sum = [];
  
  for(let i = 0; i < str.length; i++){
    sum.push(Math.pow(str[i], i+1))
  }
  return sum.reduce((a, b) => a + (b * 1), 0) === n ? "Disarium !!":"Not !!";
}