385866443 has 2 divisors, whose sum is σ = 385866444. Its totient is φ = 385866442.

The previous prime is 385866433. The next prime is 385866473. The reversal of 385866443 is 344668583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385866443 - 2¹⁸ = 385604299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385866433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192933221 + 192933222.

It is an arithmetic number, because the mean of its divisors is an integer number (192933222).

Almost surely, 2^385866443 is an apocalyptic number.

385866443 is a deficient number, since it is larger than the sum of its proper divisors (1).

385866443 is an equidigital number, since it uses as much as digits as its factorization.

385866443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 47.

The square root of 385866443 is about 19643.4834741703. The cubic root of 385866443 is about 728.0239565387.

The spelling of 385866443 in words is "three hundred eighty-five million, eight hundred sixty-six thousand, four hundred forty-three".