428571859 has 2 divisors, whose sum is σ = 428571860. Its totient is φ = 428571858.

The previous prime is 428571817. The next prime is 428571883. The reversal of 428571859 is 958175824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428571859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428571659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214285929 + 214285930.

It is an arithmetic number, because the mean of its divisors is an integer number (214285930).

Almost surely, 2^428571859 is an apocalyptic number.

428571859 is a deficient number, since it is larger than the sum of its proper divisors (1).

428571859 is an equidigital number, since it uses as much as digits as its factorization.

428571859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 49.

The square root of 428571859 is about 20701.9771761057. The cubic root of 428571859 is about 753.9476935339.

The spelling of 428571859 in words is "four hundred twenty-eight million, five hundred seventy-one thousand, eight hundred fifty-nine".