409423 has 8 divisors (see below), whose sum is σ = 488448. Its totient is φ = 335544.

The previous prime is 409397. The next prime is 409429. The reversal of 409423 is 324904.

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

It is a cyclic number.

It is not a de Polignac number, because 409423 - 2⁵ = 409391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409394 and 409403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1111 + ... + 1432.

It is an arithmetic number, because the mean of its divisors is an integer number (61056).

2⁴⁰⁹⁴²³ is an apocalyptic number.

409423 is a deficient number, since it is larger than the sum of its proper divisors (79025).

409423 is a wasteful number, since it uses less digits than its factorization.

409423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 409423 is about 639.8617038079. The cubic root of 409423 is about 74.2547223848.

The spelling of 409423 in words is "four hundred nine thousand, four hundred twenty-three".