422439859 has 2 divisors, whose sum is σ = 422439860. Its totient is φ = 422439858.

The previous prime is 422439793. The next prime is 422439889. The reversal of 422439859 is 958934224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422439859 - 2²¹ = 420342707 is a prime.

It is not a weakly prime, because it can be changed into another prime (422439889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211219929 + 211219930.

It is an arithmetic number, because the mean of its divisors is an integer number (211219930).

Almost surely, 2^422439859 is an apocalyptic number.

422439859 is a deficient number, since it is larger than the sum of its proper divisors (1).

422439859 is an equidigital number, since it uses as much as digits as its factorization.

422439859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 46.

The square root of 422439859 is about 20553.3417964087. The cubic root of 422439859 is about 750.3345819769.

The spelling of 422439859 in words is "four hundred twenty-two million, four hundred thirty-nine thousand, eight hundred fifty-nine".