394530443 has 2 divisors, whose sum is σ = 394530444. Its totient is φ = 394530442.

The previous prime is 394530419. The next prime is 394530449. The reversal of 394530443 is 344035493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394530443 - 2⁶ = 394530379 is a prime.

It is not a weakly prime, because it can be changed into another prime (394530449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197265221 + 197265222.

It is an arithmetic number, because the mean of its divisors is an integer number (197265222).

Almost surely, 2^394530443 is an apocalyptic number.

394530443 is a deficient number, since it is larger than the sum of its proper divisors (1).

394530443 is an equidigital number, since it uses as much as digits as its factorization.

394530443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 394530443 is about 19862.7904132325. The cubic root of 394530443 is about 733.4325384844.

The spelling of 394530443 in words is "three hundred ninety-four million, five hundred thirty thousand, four hundred forty-three".