404404242243 has 24 divisors (see below), whose sum is σ = 567259268688. Its totient is φ = 256238254272.

The previous prime is 404404242173. The next prime is 404404242311. The reversal of 404404242243 is 342242404404.

It is not a de Polignac number, because 404404242243 - 2⁸ = 404404241987 is a prime.

It is a super-2 number, since 2×404404242243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404404246243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562380 + ... + 1060697.

It is an arithmetic number, because the mean of its divisors is an integer number (23635802862).

Almost surely, 2^404404242243 is an apocalyptic number.

404404242243 is a deficient number, since it is larger than the sum of its proper divisors (162855026445).

404404242243 is a wasteful number, since it uses less digits than its factorization.

404404242243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623283 (or 1623260 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 33.

Adding to 404404242243 its reverse (342242404404), we get a palindrome (746646646647).

The spelling of 404404242243 in words is "four hundred four billion, four hundred four million, two hundred forty-two thousand, two hundred forty-three".