8389116947 has 4 divisors (see below), whose sum is σ = 8402938176. Its totient is φ = 8375295720.

The previous prime is 8389116937. The next prime is 8389116961. The reversal of 8389116947 is 7496119838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7496119838 = 2 ⋅3748059919.

It is a cyclic number.

It is not a de Polignac number, because 8389116947 - 2²⁶ = 8322008083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8389116892 and 8389116901.

It is not an unprimeable number, because it can be changed into a prime (8389116907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6909704 + ... + 6910917.

It is an arithmetic number, because the mean of its divisors is an integer number (2100734544).

Almost surely, 2^8389116947 is an apocalyptic number.

8389116947 is a deficient number, since it is larger than the sum of its proper divisors (13821229).

8389116947 is a wasteful number, since it uses less digits than its factorization.

8389116947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13821228.

The product of its digits is 2612736, while the sum is 56.

The square root of 8389116947 is about 91592.1227344361. The cubic root of 8389116947 is about 2031.9144377600.

The spelling of 8389116947 in words is "eight billion, three hundred eighty-nine million, one hundred sixteen thousand, nine hundred forty-seven".