423228329 has 2 divisors, whose sum is σ = 423228330. Its totient is φ = 423228328.

The previous prime is 423228319. The next prime is 423228367. The reversal of 423228329 is 923822324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386201104 + 37027225 = 19652^2 + 6085^2 .

It is a cyclic number.

It is not a de Polignac number, because 423228329 - 2¹² = 423224233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423228319) 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, 211614164 + 211614165.

It is an arithmetic number, because the mean of its divisors is an integer number (211614165).

Almost surely, 2^423228329 is an apocalyptic number.

It is an amenable number.

423228329 is a deficient number, since it is larger than the sum of its proper divisors (1).

423228329 is an equidigital number, since it uses as much as digits as its factorization.

423228329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 35.

The square root of 423228329 is about 20572.5139202772. The cubic root of 423228329 is about 750.8011167187.

The spelling of 423228329 in words is "four hundred twenty-three million, two hundred twenty-eight thousand, three hundred twenty-nine".