8422859 has 2 divisors, whose sum is σ = 8422860. Its totient is φ = 8422858.

The previous prime is 8422831. The next prime is 8422867. The reversal of 8422859 is 9582248.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8422859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8422879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211429 + 4211430.

It is an arithmetic number, because the mean of its divisors is an integer number (4211430).

Almost surely, 2^8422859 is an apocalyptic number.

8422859 is a deficient number, since it is larger than the sum of its proper divisors (1).

8422859 is an equidigital number, since it uses as much as digits as its factorization.

8422859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 38.

The square root of 8422859 is about 2902.2162221309. The cubic root of 8422859 is about 203.4634996222.

The spelling of 8422859 in words is "eight million, four hundred twenty-two thousand, eight hundred fifty-nine".