393696696397 has 2 divisors, whose sum is σ = 393696696398. Its totient is φ = 393696696396.

The previous prime is 393696696391. The next prime is 393696696431. The reversal of 393696696397 is 793696696393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224727194916 + 168969501481 = 474054^2 + 411059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393696696397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393696696391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196848348198 + 196848348199.

It is an arithmetic number, because the mean of its divisors is an integer number (196848348199).

Almost surely, 2^393696696397 is an apocalyptic number.

It is an amenable number.

393696696397 is a deficient number, since it is larger than the sum of its proper divisors (1).

393696696397 is an equidigital number, since it uses as much as digits as its factorization.

393696696397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1607077584, while the sum is 76.

The spelling of 393696696397 in words is "three hundred ninety-three billion, six hundred ninety-six million, six hundred ninety-six thousand, three hundred ninety-seven".