404523 has 12 divisors (see below), whose sum is σ = 667888. Its totient is φ = 231120.

The previous prime is 404513. The next prime is 404527. The reversal of 404523 is 325404.

It is a happy number.

It is not a de Polignac number, because 404523 - 2⁴ = 404507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404496 and 404505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3148 + ... + 3273.

2⁴⁰⁴⁵²³ is an apocalyptic number.

404523 is a deficient number, since it is larger than the sum of its proper divisors (263365).

404523 is a wasteful number, since it uses less digits than its factorization.

404523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 404523 is about 636.0212260609. The cubic root of 404523 is about 73.9573043212.

Adding to 404523 its reverse (325404), we get a palindrome (729927).

The spelling of 404523 in words is "four hundred four thousand, five hundred twenty-three".