404441423453 has 2 divisors, whose sum is σ = 404441423454. Its totient is φ = 404441423452.

The previous prime is 404441423423. The next prime is 404441423497. The reversal of 404441423453 is 354324144404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396127995769 + 8313427684 = 629387^2 + 91178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404441423453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404441423423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202220711726 + 202220711727.

It is an arithmetic number, because the mean of its divisors is an integer number (202220711727).

Almost surely, 2^404441423453 is an apocalyptic number.

It is an amenable number.

404441423453 is a deficient number, since it is larger than the sum of its proper divisors (1).

404441423453 is an equidigital number, since it uses as much as digits as its factorization.

404441423453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 404441423453 its reverse (354324144404), we get a palindrome (758765567857).

The spelling of 404441423453 in words is "four hundred four billion, four hundred forty-one million, four hundred twenty-three thousand, four hundred fifty-three".