404223 has 4 divisors (see below), whose sum is σ = 538968. Its totient is φ = 269480.

The previous prime is 404221. The next prime is 404249. The reversal of 404223 is 322404.

It is a happy number.

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 404223 - 2¹ = 404221 is a prime.

It is a D-number.

404223 is a lucky number.

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 404223.

It is not an unprimeable number, because it can be changed into a prime (404221) 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 3 ways as a sum of consecutive naturals, for example, 67368 + ... + 67373.

It is an arithmetic number, because the mean of its divisors is an integer number (134742).

2⁴⁰⁴²²³ is an apocalyptic number.

404223 is a deficient number, since it is larger than the sum of its proper divisors (134745).

404223 is a wasteful number, since it uses less digits than its factorization.

404223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134744.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 404223 is about 635.7853411333. The cubic root of 404223 is about 73.9390172042.

Adding to 404223 its reverse (322404), we get a palindrome (726627).

The spelling of 404223 in words is "four hundred four thousand, two hundred twenty-three", and thus it is an iban number.