404344443397 has 2 divisors, whose sum is σ = 404344443398. Its totient is φ = 404344443396.

The previous prime is 404344443359. The next prime is 404344443463. The reversal of 404344443397 is 793344443404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381764572641 + 22579870756 = 617871^2 + 150266^2 .

It is a cyclic number.

It is not a de Polignac number, because 404344443397 - 2¹¹ = 404344441349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404344443397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404342443397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202172221698 + 202172221699.

It is an arithmetic number, because the mean of its divisors is an integer number (202172221699).

Almost surely, 2^404344443397 is an apocalyptic number.

It is an amenable number.

404344443397 is a deficient number, since it is larger than the sum of its proper divisors (1).

404344443397 is an equidigital number, since it uses as much as digits as its factorization.

404344443397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 49.

The spelling of 404344443397 in words is "four hundred four billion, three hundred forty-four million, four hundred forty-three thousand, three hundred ninety-seven".