404413231 has 4 divisors (see below), whose sum is σ = 410109264. Its totient is φ = 398717200.

The previous prime is 404413213. The next prime is 404413253. The reversal of 404413231 is 132314404.

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 404413231 - 2⁹ = 404412719 is a prime.

It is a super-2 number, since 2×404413231² = 327100122815718722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404413831) 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, 2847910 + ... + 2848051.

It is an arithmetic number, because the mean of its divisors is an integer number (102527316).

Almost surely, 2^404413231 is an apocalyptic number.

404413231 is a deficient number, since it is larger than the sum of its proper divisors (5696033).

404413231 is an equidigital number, since it uses as much as digits as its factorization.

404413231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5696032.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 404413231 is about 20110.0281203185. The cubic root of 404413231 is about 739.5061417527.

Adding to 404413231 its reverse (132314404), we get a palindrome (536727635).

The spelling of 404413231 in words is "four hundred four million, four hundred thirteen thousand, two hundred thirty-one".