404488448393 has 2 divisors, whose sum is σ = 404488448394. Its totient is φ = 404488448392.

The previous prime is 404488448387. The next prime is 404488448443. The reversal of 404488448393 is 393844884404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381235858249 + 23252590144 = 617443^2 + 152488^2 .

It is a cyclic number.

It is not a de Polignac number, because 404488448393 - 2⁸ = 404488448137 is a prime.

It is a super-2 number, since 2×404488448393² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404488448303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202244224196 + 202244224197.

It is an arithmetic number, because the mean of its divisors is an integer number (202244224197).

Almost surely, 2^404488448393 is an apocalyptic number.

It is an amenable number.

404488448393 is a deficient number, since it is larger than the sum of its proper divisors (1).

404488448393 is an equidigital number, since it uses as much as digits as its factorization.

404488448393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42467328, while the sum is 59.

The spelling of 404488448393 in words is "four hundred four billion, four hundred eighty-eight million, four hundred forty-eight thousand, three hundred ninety-three".