423205339 has 2 divisors, whose sum is σ = 423205340. Its totient is φ = 423205338.

The previous prime is 423205337. The next prime is 423205351. The reversal of 423205339 is 933502324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423205339 - 2¹ = 423205337 is a prime.

Together with 423205337, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 423205339.

It is not a weakly prime, because it can be changed into another prime (423205337) 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, 211602669 + 211602670.

It is an arithmetic number, because the mean of its divisors is an integer number (211602670).

Almost surely, 2^423205339 is an apocalyptic number.

423205339 is a deficient number, since it is larger than the sum of its proper divisors (1).

423205339 is an equidigital number, since it uses as much as digits as its factorization.

423205339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 423205339 is about 20571.9551574468. The cubic root of 423205339 is about 750.7875218268.

The spelling of 423205339 in words is "four hundred twenty-three million, two hundred five thousand, three hundred thirty-nine".