389284393 has 2 divisors, whose sum is σ = 389284394. Its totient is φ = 389284392.

The previous prime is 389284387. The next prime is 389284421. The reversal of 389284393 is 393482983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295736809 + 93547584 = 17197^2 + 9672^2 .

It is an emirp because it is prime and its reverse (393482983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389284393 - 2¹³ = 389276201 is a prime.

It is not a weakly prime, because it can be changed into another prime (389284303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194642196 + 194642197.

It is an arithmetic number, because the mean of its divisors is an integer number (194642197).

Almost surely, 2^389284393 is an apocalyptic number.

It is an amenable number.

389284393 is a deficient number, since it is larger than the sum of its proper divisors (1).

389284393 is an equidigital number, since it uses as much as digits as its factorization.

389284393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 389284393 is about 19730.2912548193. The cubic root of 389284393 is about 730.1672182140.

The spelling of 389284393 in words is "three hundred eighty-nine million, two hundred eighty-four thousand, three hundred ninety-three".