855389383 has 2 divisors, whose sum is σ = 855389384. Its totient is φ = 855389382.

The previous prime is 855389363. The next prime is 855389429. The reversal of 855389383 is 383983558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855389383 - 2⁹ = 855388871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855389383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855389303) 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, 427694691 + 427694692.

It is an arithmetic number, because the mean of its divisors is an integer number (427694692).

Almost surely, 2^855389383 is an apocalyptic number.

855389383 is a deficient number, since it is larger than the sum of its proper divisors (1).

855389383 is an equidigital number, since it uses as much as digits as its factorization.

855389383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 52.

The square root of 855389383 is about 29247.0405853310. The cubic root of 855389383 is about 949.2660565752.

The spelling of 855389383 in words is "eight hundred fifty-five million, three hundred eighty-nine thousand, three hundred eighty-three".