404423 has 2 divisors, whose sum is σ = 404424. Its totient is φ = 404422.

The previous prime is 404419. The next prime is 404429. The reversal of 404423 is 324404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404423 - 2² = 404419 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404429) 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 as a sum of consecutive naturals, namely, 202211 + 202212.

It is an arithmetic number, because the mean of its divisors is an integer number (202212).

2⁴⁰⁴⁴²³ is an apocalyptic number.

404423 is a deficient number, since it is larger than the sum of its proper divisors (1).

404423 is an equidigital number, since it uses as much as digits as its factorization.

404423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 404423 is about 635.9426074733. The cubic root of 404423 is about 73.9512096205.

Adding to 404423 its reverse (324404), we get a palindrome (728827).

The spelling of 404423 in words is "four hundred four thousand, four hundred twenty-three", and thus it is an iban number.