408423 has 8 divisors (see below), whose sum is σ = 550000. Its totient is φ = 269568.

The previous prime is 408413. The next prime is 408427. The reversal of 408423 is 324804.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-408423 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408423.

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 408423.

It is not an unprimeable number, because it can be changed into a prime (408427) 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, 298 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (68750).

2⁴⁰⁸⁴²³ is an apocalyptic number.

408423 is a deficient number, since it is larger than the sum of its proper divisors (141577).

408423 is a wasteful number, since it uses less digits than its factorization.

408423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

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

The square root of 408423 is about 639.0798072229. The cubic root of 408423 is about 74.1942183264.

The spelling of 408423 in words is "four hundred eight thousand, four hundred twenty-three".