408487315393 has 2 divisors, whose sum is σ = 408487315394. Its totient is φ = 408487315392.

The previous prime is 408487315367. The next prime is 408487315417. The reversal of 408487315393 is 393513784804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376809367104 + 31677948289 = 613848^2 + 177983^2 .

It is a cyclic number.

It is not a de Polignac number, because 408487315393 - 2²¹ = 408485218241 is a prime.

It is not a weakly prime, because it can be changed into another prime (408487315303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204243657696 + 204243657697.

It is an arithmetic number, because the mean of its divisors is an integer number (204243657697).

Almost surely, 2^408487315393 is an apocalyptic number.

It is an amenable number.

408487315393 is a deficient number, since it is larger than the sum of its proper divisors (1).

408487315393 is an equidigital number, since it uses as much as digits as its factorization.

408487315393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 408487315393 in words is "four hundred eight billion, four hundred eighty-seven million, three hundred fifteen thousand, three hundred ninety-three".