Simkav

function putSpacesNumber(number) {
  if (typeof number !== 'number') {
    throw new TypeError('Argument must be a number');
  }
  if (number < 1000) {
    return number;
  }
  const arr = number.toString().split('');
  const result = [];
  const lengthdivineby3 = arr.length % 3;
  if (lengthdivineby3) {
    result.push(arr.slice(0, lengthdivineby3).join(''));
  }
  for (let i = lengthdivineby3; i < arr.length; i += 3) {
    result.push(' ', arr.slice(i, i + 3).join(''));
  }
  return result.join('').trim();
}