404244443 has 4 divisors (see below), whose sum is σ = 404305800. Its totient is φ = 404183088.

The previous prime is 404244403. The next prime is 404244457. The reversal of 404244443 is 344442404.

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 404244443 - 2²⁸ = 135808987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404244403) 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, 19418 + ... + 34431.

It is an arithmetic number, because the mean of its divisors is an integer number (101076450).

Almost surely, 2^404244443 is an apocalyptic number.

404244443 is a deficient number, since it is larger than the sum of its proper divisors (61357).

404244443 is an equidigital number, since it uses as much as digits as its factorization.

404244443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61356.

The product of its (nonzero) digits is 24576, while the sum is 29.

The square root of 404244443 is about 20105.8310696176. The cubic root of 404244443 is about 739.4032460656.

Adding to 404244443 its reverse (344442404), we get a palindrome (748686847).

The spelling of 404244443 in words is "four hundred four million, two hundred forty-four thousand, four hundred forty-three".