855989558 has 16 divisors (see below), whose sum is σ = 1355927040. Its totient is φ = 404159400.

The previous prime is 855989531. The next prime is 855989573.

855989558 is nontrivially palindromic in base 10.

855989558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 855989558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24398 + ... + 48033.

It is an arithmetic number, because the mean of its divisors is an integer number (84745440).

Almost surely, 2^855989558 is an apocalyptic number.

855989558 is a deficient number, since it is larger than the sum of its proper divisors (499937482).

855989558 is a wasteful number, since it uses less digits than its factorization.

855989558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72763.

The product of its digits is 25920000, while the sum is 62.

The square root of 855989558 is about 29257.2992260051. The cubic root of 855989558 is about 949.4880188657.

The spelling of 855989558 in words is "eight hundred fifty-five million, nine hundred eighty-nine thousand, five hundred fifty-eight".