394386347 has 2 divisors, whose sum is σ = 394386348. Its totient is φ = 394386346.

The previous prime is 394386277. The next prime is 394386379. The reversal of 394386347 is 743683493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394386347 - 2²⁴ = 377609131 is a prime.

It is not a weakly prime, because it can be changed into another prime (394386397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197193173 + 197193174.

It is an arithmetic number, because the mean of its divisors is an integer number (197193174).

Almost surely, 2^394386347 is an apocalyptic number.

394386347 is a deficient number, since it is larger than the sum of its proper divisors (1).

394386347 is an equidigital number, since it uses as much as digits as its factorization.

394386347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 47.

The square root of 394386347 is about 19859.1627970567. The cubic root of 394386347 is about 733.3432360692.

The spelling of 394386347 in words is "three hundred ninety-four million, three hundred eighty-six thousand, three hundred forty-seven".