404240244413 has 2 divisors, whose sum is σ = 404240244414. Its totient is φ = 404240244412.

The previous prime is 404240244391. The next prime is 404240244449. The reversal of 404240244413 is 314442042404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296260312804 + 107979931609 = 544298^2 + 328603^2 .

It is a cyclic number.

It is not a de Polignac number, because 404240244413 - 2²⁸ = 403971808957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404240244413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404240244013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202120122206 + 202120122207.

It is an arithmetic number, because the mean of its divisors is an integer number (202120122207).

Almost surely, 2^404240244413 is an apocalyptic number.

It is an amenable number.

404240244413 is a deficient number, since it is larger than the sum of its proper divisors (1).

404240244413 is an equidigital number, since it uses as much as digits as its factorization.

404240244413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 404240244413 its reverse (314442042404), we get a palindrome (718682286817).

The spelling of 404240244413 in words is "four hundred four billion, two hundred forty million, two hundred forty-four thousand, four hundred thirteen".