423992 has 8 divisors (see below), whose sum is σ = 795000. Its totient is φ = 211992.

The previous prime is 423991. The next prime is 424001. The reversal of 423992 is 299324.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 2.

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 423992.

It is not an unprimeable number, because it can be changed into a prime (423991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26492 + ... + 26507.

It is an arithmetic number, because the mean of its divisors is an integer number (99375).

2⁴²³⁹⁹² is an apocalyptic number.

It is an amenable number.

423992 is a deficient number, since it is larger than the sum of its proper divisors (371008).

423992 is a wasteful number, since it uses less digits than its factorization.

423992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53005 (or 53001 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 423992 is about 651.1466808638. The cubic root of 423992 is about 75.1252425927.

The spelling of 423992 in words is "four hundred twenty-three thousand, nine hundred ninety-two".