855428822389 has 16 divisors (see below), whose sum is σ = 866722446720. Its totient is φ = 844225358400.

The previous prime is 855428822387. The next prime is 855428822473. The reversal of 855428822389 is 983228824558.

It is a cyclic number.

It is not a de Polignac number, because 855428822389 - 2¹ = 855428822387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855428822389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855428822387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16121907 + ... + 16174879.

It is an arithmetic number, because the mean of its divisors is an integer number (54170152920).

Almost surely, 2^855428822389 is an apocalyptic number.

It is an amenable number.

855428822389 is a deficient number, since it is larger than the sum of its proper divisors (11293624331).

855428822389 is a wasteful number, since it uses less digits than its factorization.

855428822389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53820.

The product of its digits is 88473600, while the sum is 64.

The spelling of 855428822389 in words is "eight hundred fifty-five billion, four hundred twenty-eight million, eight hundred twenty-two thousand, three hundred eighty-nine".