404243223 has 4 divisors (see below), whose sum is σ = 538990968. Its totient is φ = 269495480.

The previous prime is 404243207. The next prime is 404243233. The reversal of 404243223 is 322342404.

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 404243223 - 2⁴ = 404243207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404243193 and 404243202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404243233) 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 in 3 ways as a sum of consecutive naturals, for example, 67373868 + ... + 67373873.

It is an arithmetic number, because the mean of its divisors is an integer number (134747742).

Almost surely, 2^404243223 is an apocalyptic number.

404243223 is a deficient number, since it is larger than the sum of its proper divisors (134747745).

404243223 is a wasteful number, since it uses less digits than its factorization.

404243223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134747744.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404243223 is about 20105.8007301376. The cubic root of 404243223 is about 739.4025022312.

Adding to 404243223 its reverse (322342404), we get a palindrome (726585627).

The spelling of 404243223 in words is "four hundred four million, two hundred forty-three thousand, two hundred twenty-three".