423389 has 2 divisors, whose sum is σ = 423390. Its totient is φ = 423388.

The previous prime is 423347. The next prime is 423403. The reversal of 423389 is 983324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403225 + 20164 = 635^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 423389 - 2⁸ = 423133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4⁹ + 2¹³ + 3⁷ + 3¹⁰ + 8⁵ + 9⁵ .

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211694 + 211695.

It is an arithmetic number, because the mean of its divisors is an integer number (211695).

2⁴²³³⁸⁹ is an apocalyptic number.

It is an amenable number.

423389 is a deficient number, since it is larger than the sum of its proper divisors (1).

423389 is an equidigital number, since it uses as much as digits as its factorization.

423389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 423389 is about 650.6834868045. The cubic root of 423389 is about 75.0896114065.

The spelling of 423389 in words is "four hundred twenty-three thousand, three hundred eighty-nine".