404240244423 has 16 divisors (see below), whose sum is σ = 564609643776. Its totient is φ = 256773355520.

The previous prime is 404240244413. The next prime is 404240244449. The reversal of 404240244423 is 324442042404.

It is a cyclic number.

It is not a de Polignac number, because 404240244423 - 2⁵ = 404240244391 is a prime.

It is a super-2 number, since 2×404240244423² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404240244413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11380233 + ... + 11415698.

It is an arithmetic number, because the mean of its divisors is an integer number (35288102736).

Almost surely, 2^404240244423 is an apocalyptic number.

404240244423 is a deficient number, since it is larger than the sum of its proper divisors (160369399353).

404240244423 is a wasteful number, since it uses less digits than its factorization.

404240244423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22796214.

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

Adding to 404240244423 its reverse (324442042404), we get a palindrome (728682286827).

The spelling of 404240244423 in words is "four hundred four billion, two hundred forty million, two hundred forty-four thousand, four hundred twenty-three".