423468389 has 2 divisors, whose sum is σ = 423468390. Its totient is φ = 423468388.

The previous prime is 423468359. The next prime is 423468421. The reversal of 423468389 is 983864324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354079489 + 69388900 = 18817^2 + 8330^2 .

It is a cyclic number.

It is not a de Polignac number, because 423468389 - 2¹⁶ = 423402853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423468359) 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, 211734194 + 211734195.

It is an arithmetic number, because the mean of its divisors is an integer number (211734195).

Almost surely, 2^423468389 is an apocalyptic number.

It is an amenable number.

423468389 is a deficient number, since it is larger than the sum of its proper divisors (1).

423468389 is an equidigital number, since it uses as much as digits as its factorization.

423468389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 47.

The square root of 423468389 is about 20578.3475770043. The cubic root of 423468389 is about 750.9430442449.

The spelling of 423468389 in words is "four hundred twenty-three million, four hundred sixty-eight thousand, three hundred eighty-nine".