8385889 has 2 divisors, whose sum is σ = 8385890. Its totient is φ = 8385888.

The previous prime is 8385887. The next prime is 8385893. The reversal of 8385889 is 9885838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 360000 = 2833^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 8385889 - 2¹ = 8385887 is a prime.

Together with 8385887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8385887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4192944 + 4192945.

It is an arithmetic number, because the mean of its divisors is an integer number (4192945).

Almost surely, 2^8385889 is an apocalyptic number.

It is an amenable number.

8385889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8385889 is an equidigital number, since it uses as much as digits as its factorization.

8385889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 49.

The square root of 8385889 is about 2895.8399472347. The cubic root of 8385889 is about 203.1653792387.

The spelling of 8385889 in words is "eight million, three hundred eighty-five thousand, eight hundred eighty-nine".