423204589 has 4 divisors (see below), whose sum is σ = 423845500. Its totient is φ = 422563680.

The previous prime is 423204571. The next prime is 423204611. The reversal of 423204589 is 985402324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222755625 + 200448964 = 14925^2 + 14158^2 .

It is a cyclic number.

It is not a de Polignac number, because 423204589 - 2⁹ = 423204077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423204559) 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 in 3 ways as a sum of consecutive naturals, for example, 319464 + ... + 320785.

It is an arithmetic number, because the mean of its divisors is an integer number (105961375).

Almost surely, 2^423204589 is an apocalyptic number.

It is an amenable number.

423204589 is a deficient number, since it is larger than the sum of its proper divisors (640911).

423204589 is an equidigital number, since it uses as much as digits as its factorization.

423204589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640910.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 423204589 is about 20571.9369287386. The cubic root of 423204589 is about 750.7870783140.

The spelling of 423204589 in words is "four hundred twenty-three million, two hundred four thousand, five hundred eighty-nine".