394611193271 has 2 divisors, whose sum is σ = 394611193272. Its totient is φ = 394611193270.

The previous prime is 394611193247. The next prime is 394611193307. The reversal of 394611193271 is 172391116493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394611193271 - 2¹⁰ = 394611192247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394611192271) 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, 197305596635 + 197305596636.

It is an arithmetic number, because the mean of its divisors is an integer number (197305596636).

Almost surely, 2^394611193271 is an apocalyptic number.

394611193271 is a deficient number, since it is larger than the sum of its proper divisors (1).

394611193271 is an equidigital number, since it uses as much as digits as its factorization.

394611193271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The spelling of 394611193271 in words is "three hundred ninety-four billion, six hundred eleven million, one hundred ninety-three thousand, two hundred seventy-one".