408745016896397 has 2 divisors, whose sum is σ = 408745016896398. Its totient is φ = 408745016896396.

The previous prime is 408745016896361. The next prime is 408745016896399. The reversal of 408745016896397 is 793698610547804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329496047904676 + 79248968991721 = 18152026^2 + 8902189^2 .

It is a cyclic number.

It is not a de Polignac number, because 408745016896397 - 2¹⁰ = 408745016895373 is a prime.

Together with 408745016896399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408745016896399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204372508448198 + 204372508448199.

It is an arithmetic number, because the mean of its divisors is an integer number (204372508448199).

Almost surely, 2^{408745016896397} is an apocalyptic number.

It is an amenable number.

408745016896397 is a deficient number, since it is larger than the sum of its proper divisors (1).

408745016896397 is an equidigital number, since it uses as much as digits as its factorization.

408745016896397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2194698240, while the sum is 77.

The spelling of 408745016896397 in words is "four hundred eight trillion, seven hundred forty-five billion, sixteen million, eight hundred ninety-six thousand, three hundred ninety-seven".