8389427697 has 12 divisors (see below), whose sum is σ = 13849214080. Its totient is φ = 4793958648.

The previous prime is 8389427689. The next prime is 8389427701. The reversal of 8389427697 is 7967249838.

It is not a de Polignac number, because 8389427697 - 2³ = 8389427689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 133165519 = 8389427697 / (8 + 3 + 8 + 9 + 4 + 2 + 7 + 6 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8389447697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66582697 + ... + 66582822.

Almost surely, 2^8389427697 is an apocalyptic number.

It is an amenable number.

8389427697 is a deficient number, since it is larger than the sum of its proper divisors (5459786383).

8389427697 is a wasteful number, since it uses less digits than its factorization.

8389427697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133165532 (or 133165529 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 8389427697 is about 91593.8190982339. The cubic root of 8389427697 is about 2031.9395262017.

The spelling of 8389427697 in words is "eight billion, three hundred eighty-nine million, four hundred twenty-seven thousand, six hundred ninety-seven".