423931589 has 8 divisors (see below), whose sum is σ = 429362208. Its totient is φ = 418534480.

The previous prime is 423931583. The next prime is 423931621. The reversal of 423931589 is 985139324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423931589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423931583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17594 + ... + 34020.

It is an arithmetic number, because the mean of its divisors is an integer number (53670276).

Almost surely, 2^423931589 is an apocalyptic number.

It is an amenable number.

423931589 is a deficient number, since it is larger than the sum of its proper divisors (5430619).

423931589 is a wasteful number, since it uses less digits than its factorization.

423931589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755.

The product of its digits is 233280, while the sum is 44.

The square root of 423931589 is about 20589.5990490344. The cubic root of 423931589 is about 751.2167443841.

The spelling of 423931589 in words is "four hundred twenty-three million, nine hundred thirty-one thousand, five hundred eighty-nine".