855889339 has 2 divisors, whose sum is σ = 855889340. Its totient is φ = 855889338.

The previous prime is 855889337. The next prime is 855889357. The reversal of 855889339 is 933988558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855889339 - 2¹ = 855889337 is a prime.

It is a super-2 number, since 2×855889339² = 1465093121227713842, which contains 22 as substring.

Together with 855889337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (855889337) 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, 427944669 + 427944670.

It is an arithmetic number, because the mean of its divisors is an integer number (427944670).

Almost surely, 2^855889339 is an apocalyptic number.

855889339 is a deficient number, since it is larger than the sum of its proper divisors (1).

855889339 is an equidigital number, since it uses as much as digits as its factorization.

855889339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 58.

The square root of 855889339 is about 29255.5864579741. The cubic root of 855889339 is about 949.4509621622.

The spelling of 855889339 in words is "eight hundred fifty-five million, eight hundred eighty-nine thousand, three hundred thirty-nine".