423918589 has 4 divisors (see below), whose sum is σ = 442349856. Its totient is φ = 405487324.

The previous prime is 423918563. The next prime is 423918601. The reversal of 423918589 is 985819324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423918589 - 2⁷ = 423918461 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 (423918529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9215599 + ... + 9215644.

It is an arithmetic number, because the mean of its divisors is an integer number (110587464).

Almost surely, 2^423918589 is an apocalyptic number.

It is an amenable number.

423918589 is a deficient number, since it is larger than the sum of its proper divisors (18431267).

423918589 is a wasteful number, since it uses less digits than its factorization.

423918589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431266.

The product of its digits is 622080, while the sum is 49.

The square root of 423918589 is about 20589.2833532399. The cubic root of 423918589 is about 751.2090655370.

The spelling of 423918589 in words is "four hundred twenty-three million, nine hundred eighteen thousand, five hundred eighty-nine".