404395684313 has 2 divisors, whose sum is σ = 404395684314. Its totient is φ = 404395684312.

The previous prime is 404395684291. The next prime is 404395684477. The reversal of 404395684313 is 313486593404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380199259609 + 24196424704 = 616603^2 + 155552^2 .

It is a cyclic number.

It is not a de Polignac number, because 404395684313 - 2¹⁸ = 404395422169 is a prime.

It is not a weakly prime, because it can be changed into another prime (404395684213) 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, 202197842156 + 202197842157.

It is an arithmetic number, because the mean of its divisors is an integer number (202197842157).

Almost surely, 2^404395684313 is an apocalyptic number.

It is an amenable number.

404395684313 is a deficient number, since it is larger than the sum of its proper divisors (1).

404395684313 is an equidigital number, since it uses as much as digits as its factorization.

404395684313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 50.

Subtracting from 404395684313 its reverse (313486593404), we obtain a palindrome (90909090909).

The spelling of 404395684313 in words is "four hundred four billion, three hundred ninety-five million, six hundred eighty-four thousand, three hundred thirteen".