423924 has 12 divisors (see below), whose sum is σ = 989184. Its totient is φ = 141304.

The previous prime is 423887. The next prime is 423931. The reversal of 423924 is 429324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 423894 and 423903.

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 423924.

It is an unprimeable number.

423924 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 17652 + ... + 17675.

It is an arithmetic number, because the mean of its divisors is an integer number (82432).

2⁴²³⁹²⁴ is an apocalyptic number.

It is an amenable number.

423924 is an abundant number, since it is smaller than the sum of its proper divisors (565260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423924 is a wasteful number, since it uses less digits than its factorization.

423924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35334 (or 35332 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 423924 is about 651.0944631926. The cubic root of 423924 is about 75.1212261729.

The spelling of 423924 in words is "four hundred twenty-three thousand, nine hundred twenty-four".