423959 has 4 divisors (see below), whose sum is σ = 442416. Its totient is φ = 405504.

The previous prime is 423949. The next prime is 423961. The reversal of 423959 is 959324.

423959 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423959.

It is not an unprimeable number, because it can be changed into a prime (423949) 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, 9194 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (110604).

2⁴²³⁹⁵⁹ is an apocalyptic number.

423959 is a deficient number, since it is larger than the sum of its proper divisors (18457).

423959 is a wasteful number, since it uses less digits than its factorization.

423959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18456.

The product of its digits is 9720, while the sum is 32.

The square root of 423959 is about 651.1213404581. The cubic root of 423959 is about 75.1232935014.

The spelling of 423959 in words is "four hundred twenty-three thousand, nine hundred fifty-nine".