404224523 has 4 divisors (see below), whose sum is σ = 408226848. Its totient is φ = 400222200.

The previous prime is 404224507. The next prime is 404224529. The reversal of 404224523 is 325422404.

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 404224523 - 2⁴ = 404224507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404224492 and 404224501.

It is not an unprimeable number, because it can be changed into a prime (404224529) 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, 2001011 + ... + 2001212.

It is an arithmetic number, because the mean of its divisors is an integer number (102056712).

Almost surely, 2^404224523 is an apocalyptic number.

404224523 is a deficient number, since it is larger than the sum of its proper divisors (4002325).

404224523 is a wasteful number, since it uses less digits than its factorization.

404224523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002324.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 404224523 is about 20105.3356848375. The cubic root of 404224523 is about 739.3911006465.

Adding to 404224523 its reverse (325422404), we get a palindrome (729646927).

The spelling of 404224523 in words is "four hundred four million, two hundred twenty-four thousand, five hundred twenty-three".