404021200393 has 2 divisors, whose sum is σ = 404021200394. Its totient is φ = 404021200392.

The previous prime is 404021200339. The next prime is 404021200403. The reversal of 404021200393 is 393002120404.

Together with previous prime (404021200339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371335453129 + 32685747264 = 609373^2 + 180792^2 .

It is a cyclic number.

It is not a de Polignac number, because 404021200393 - 2²⁵ = 403987645961 is a prime.

It is not a weakly prime, because it can be changed into another prime (404021200313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202010600196 + 202010600197.

It is an arithmetic number, because the mean of its divisors is an integer number (202010600197).

Almost surely, 2^404021200393 is an apocalyptic number.

It is an amenable number.

404021200393 is a deficient number, since it is larger than the sum of its proper divisors (1).

404021200393 is an equidigital number, since it uses as much as digits as its factorization.

404021200393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 404021200393 its reverse (393002120404), we get a palindrome (797023320797).

The spelling of 404021200393 in words is "four hundred four billion, twenty-one million, two hundred thousand, three hundred ninety-three".