Convert numerical mobile number (1234567e89) into a proper format

To convert a numerical mobile number into a proper format using JavaScript, you can use the following code snippet:

//Example Google contact mobile number conversion
function formatMobileNumber(number) {
  //format number
  const formattedNumber = number.toString().replace(/(\d{3})(\d{3})(\d{4})/, '($1) $2-$3');
  return formattedNumber;
}
const originalNumber = 1234567e89;
const properFormatNumber = formatMobileNumber(originalNumber);

// Output
console.log(properFormatNumber); 


This code defines a function formatMobileNumber that takes a numerical mobile number as input and returns it in the proper format. The replace method is used to format the number as per the standard pattern for mobile numbers.