393696696391 has 2 divisors, whose sum is σ = 393696696392. Its totient is φ = 393696696390.

The previous prime is 393696696359. The next prime is 393696696397. The reversal of 393696696391 is 193696696393.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 393696696391 - 2⁵ = 393696696359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 393696696391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393696696397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196848348195 + 196848348196.

It is an arithmetic number, because the mean of its divisors is an integer number (196848348196).

Almost surely, 2^393696696391 is an apocalyptic number.

393696696391 is a deficient number, since it is larger than the sum of its proper divisors (1).

393696696391 is an equidigital number, since it uses as much as digits as its factorization.

393696696391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 229582512, while the sum is 70.

The spelling of 393696696391 in words is "three hundred ninety-three billion, six hundred ninety-six million, six hundred ninety-six thousand, three hundred ninety-one".