423559 has 2 divisors, whose sum is σ = 423560. Its totient is φ = 423558.

The previous prime is 423557. The next prime is 423581. The reversal of 423559 is 955324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423559 - 2¹ = 423557 is a prime.

Together with 423557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211779 + 211780.

It is an arithmetic number, because the mean of its divisors is an integer number (211780).

2⁴²³⁵⁵⁹ is an apocalyptic number.

423559 is a deficient number, since it is larger than the sum of its proper divisors (1).

423559 is an equidigital number, since it uses as much as digits as its factorization.

423559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 423559 is about 650.8141055632. The cubic root of 423559 is about 75.0996601054.

The spelling of 423559 in words is "four hundred twenty-three thousand, five hundred fifty-nine".