404321423 has 4 divisors (see below), whose sum is σ = 441077928. Its totient is φ = 367564920.

The previous prime is 404321419. The next prime is 404321429. The reversal of 404321423 is 324123404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404321423 - 2² = 404321419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404321429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18378236 + ... + 18378257.

It is an arithmetic number, because the mean of its divisors is an integer number (110269482).

Almost surely, 2^404321423 is an apocalyptic number.

404321423 is a deficient number, since it is larger than the sum of its proper divisors (36756505).

404321423 is a wasteful number, since it uses less digits than its factorization.

404321423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36756504.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404321423 is about 20107.7453484969. The cubic root of 404321423 is about 739.4501777759.

Adding to 404321423 its reverse (324123404), we get a palindrome (728444827).

The spelling of 404321423 in words is "four hundred four million, three hundred twenty-one thousand, four hundred twenty-three".