404240443 has 4 divisors (see below), whose sum is σ = 414100008. Its totient is φ = 394380880.

The previous prime is 404240423. The next prime is 404240471. The reversal of 404240443 is 344042404.

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 404240443 - 2¹³ = 404232251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404240423) 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, 4929721 + ... + 4929802.

It is an arithmetic number, because the mean of its divisors is an integer number (103525002).

Almost surely, 2^404240443 is an apocalyptic number.

404240443 is a deficient number, since it is larger than the sum of its proper divisors (9859565).

404240443 is an equidigital number, since it uses as much as digits as its factorization.

404240443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9859564.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 404240443 is about 20105.7315957415. The cubic root of 404240443 is about 739.4008072585.

Adding to 404240443 its reverse (344042404), we get a palindrome (748282847).

The spelling of 404240443 in words is "four hundred four million, two hundred forty thousand, four hundred forty-three".