397416317 has 2 divisors, whose sum is σ = 397416318. Its totient is φ = 397416316.

The previous prime is 397416233. The next prime is 397416347. The reversal of 397416317 is 713614793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384983641 + 12432676 = 19621^2 + 3526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397416317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397416347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198708158 + 198708159.

It is an arithmetic number, because the mean of its divisors is an integer number (198708159).

Almost surely, 2^397416317 is an apocalyptic number.

It is an amenable number.

397416317 is a deficient number, since it is larger than the sum of its proper divisors (1).

397416317 is an equidigital number, since it uses as much as digits as its factorization.

397416317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 397416317 is about 19935.3032833714. The cubic root of 397416317 is about 735.2164768745.

The spelling of 397416317 in words is "three hundred ninety-seven million, four hundred sixteen thousand, three hundred seventeen".