394254597871 has 2 divisors, whose sum is σ = 394254597872. Its totient is φ = 394254597870.

The previous prime is 394254597823. The next prime is 394254597883. The reversal of 394254597871 is 178795452493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394254597871 - 2¹⁹ = 394254073583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394254597371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197127298935 + 197127298936.

It is an arithmetic number, because the mean of its divisors is an integer number (197127298936).

Almost surely, 2^394254597871 is an apocalyptic number.

394254597871 is a deficient number, since it is larger than the sum of its proper divisors (1).

394254597871 is an equidigital number, since it uses as much as digits as its factorization.

394254597871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 64.

The spelling of 394254597871 in words is "three hundred ninety-four billion, two hundred fifty-four million, five hundred ninety-seven thousand, eight hundred seventy-one".