Mr. Li’s mobile phone number is an eleven-digit number. The three-digit number in the billion level is viewed from front to back. The last number is exactly three times the previous number, and the number with tens of millions is more than the number with billions. 2. The number in the million digit is 1 less than the number in the billion digit, and the number after that is 000979. What is Mr. Li's phone number?
李老师的手机号码是一个十一位数，亿级里的三位数从前往后看，后面一个数正好是前面一个数的3倍，千万位上的数比十亿位上的数多2，百万位上的数比亿位上的数少1，后面的数是000979．李老师的手机号是多少？
<result>13_958_000_979</result>