8389390747 has 4 divisors (see below), whose sum is σ = 8467796376. Its totient is φ = 8310985120.

The previous prime is 8389390733. The next prime is 8389390811. The reversal of 8389390747 is 7470939838.

8389390747 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7470939838 = 2 ⋅3735469919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8389390747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8389390691 and 8389390700.

It is not an unprimeable number, because it can be changed into a prime (8389390147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39202654 + ... + 39202867.

It is an arithmetic number, because the mean of its divisors is an integer number (2116949094).

Almost surely, 2^8389390747 is an apocalyptic number.

8389390747 is a deficient number, since it is larger than the sum of its proper divisors (78405629).

8389390747 is a wasteful number, since it uses less digits than its factorization.

8389390747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78405628.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The square root of 8389390747 is about 91593.6173922616. The cubic root of 8389390747 is about 2031.9365430711.

The spelling of 8389390747 in words is "eight billion, three hundred eighty-nine million, three hundred ninety thousand, seven hundred forty-seven".