400224523 has 8 divisors (see below), whose sum is σ = 435220992. Its totient is φ = 366500736.

The previous prime is 400224511. The next prime is 400224529. The reversal of 400224523 is 325422004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400224523 - 2¹⁷ = 400093451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400224494 and 400224503.

It is not an unprimeable number, because it can be changed into a prime (400224529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317515 + ... + 318772.

It is an arithmetic number, because the mean of its divisors is an integer number (54402624).

Almost surely, 2^400224523 is an apocalyptic number.

400224523 is a deficient number, since it is larger than the sum of its proper divisors (34996469).

400224523 is a wasteful number, since it uses less digits than its factorization.

400224523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636341.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 400224523 is about 20005.6122875557. The cubic root of 400224523 is about 736.9441322432.

Adding to 400224523 its reverse (325422004), we get a palindrome (725646527).

The spelling of 400224523 in words is "four hundred million, two hundred twenty-four thousand, five hundred twenty-three".