394657316297 has 2 divisors, whose sum is σ = 394657316298. Its totient is φ = 394657316296.

The previous prime is 394657316279. The next prime is 394657316303. The reversal of 394657316297 is 792613756493.

Together with previous prime (394657316279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375847468096 + 18809848201 = 613064^2 + 137149^2 .

It is a cyclic number.

It is not a de Polignac number, because 394657316297 - 2⁸ = 394657316041 is a prime.

It is not a weakly prime, because it can be changed into another prime (394657316257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197328658148 + 197328658149.

It is an arithmetic number, because the mean of its divisors is an integer number (197328658149).

Almost surely, 2^394657316297 is an apocalyptic number.

It is an amenable number.

394657316297 is a deficient number, since it is larger than the sum of its proper divisors (1).

394657316297 is an equidigital number, since it uses as much as digits as its factorization.

394657316297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 62.

The spelling of 394657316297 in words is "three hundred ninety-four billion, six hundred fifty-seven million, three hundred sixteen thousand, two hundred ninety-seven".