404423223 has 4 divisors (see below), whose sum is σ = 539230968. Its totient is φ = 269615480.

The previous prime is 404423219. The next prime is 404423233. The reversal of 404423223 is 322324404.

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 404423223 - 2² = 404423219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404423193 and 404423202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404423233) 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, 67403868 + ... + 67403873.

It is an arithmetic number, because the mean of its divisors is an integer number (134807742).

Almost surely, 2^404423223 is an apocalyptic number.

404423223 is a deficient number, since it is larger than the sum of its proper divisors (134807745).

404423223 is a wasteful number, since it uses less digits than its factorization.

404423223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134807744.

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

The square root of 404423223 is about 20110.2765520517. The cubic root of 404423223 is about 739.5122321276.

Adding to 404423223 its reverse (322324404), we get a palindrome (726747627).

The spelling of 404423223 in words is "four hundred four million, four hundred twenty-three thousand, two hundred twenty-three".