8343857 has 2 divisors, whose sum is σ = 8343858. Its totient is φ = 8343856.

The previous prime is 8343809. The next prime is 8343859. The reversal of 8343857 is 7583438.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 2238016 = 2471^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 8343857 - 2¹² = 8339761 is a prime.

Together with 8343859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8343857.

It is not a weakly prime, because it can be changed into another prime (8343859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171928 + 4171929.

It is an arithmetic number, because the mean of its divisors is an integer number (4171929).

Almost surely, 2^8343857 is an apocalyptic number.

It is an amenable number.

8343857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8343857 is an equidigital number, since it uses as much as digits as its factorization.

8343857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 8343857 is about 2888.5735233849. The cubic root of 8343857 is about 202.8253733747.

The spelling of 8343857 in words is "eight million, three hundred forty-three thousand, eight hundred fifty-seven".