423408 has 20 divisors (see below), whose sum is σ = 1093928. Its totient is φ = 141120.

The previous prime is 423403. The next prime is 423413. The reversal of 423408 is 804324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423403) and next prime (423413).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4363 + ... + 4458.

2⁴²³⁴⁰⁸ is an apocalyptic number.

423408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

423408 is an abundant number, since it is smaller than the sum of its proper divisors (670520).

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

423408 is a wasteful number, since it uses less digits than its factorization.

423408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832 (or 8826 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 423408 is about 650.6980866731. The cubic root of 423408 is about 75.0907346299.

The spelling of 423408 in words is "four hundred twenty-three thousand, four hundred eight".