408445407313 has 2 divisors, whose sum is σ = 408445407314. Its totient is φ = 408445407312.

The previous prime is 408445407283. The next prime is 408445407317. The reversal of 408445407313 is 313704544804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405828880209 + 2616527104 = 637047^2 + 51152^2 .

It is a cyclic number.

It is not a de Polignac number, because 408445407313 - 2¹³ = 408445399121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 408445407313.

It is not a weakly prime, because it can be changed into another prime (408445407317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204222703656 + 204222703657.

It is an arithmetic number, because the mean of its divisors is an integer number (204222703657).

Almost surely, 2^408445407313 is an apocalyptic number.

It is an amenable number.

408445407313 is a deficient number, since it is larger than the sum of its proper divisors (1).

408445407313 is an equidigital number, since it uses as much as digits as its factorization.

408445407313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 408445407313 in words is "four hundred eight billion, four hundred forty-five million, four hundred seven thousand, three hundred thirteen".