855281889 has 64 divisors (see below), whose sum is σ = 1613537280. Its totient is φ = 434799360.

The previous prime is 855281879. The next prime is 855281897. The reversal of 855281889 is 988182558.

It is a happy number.

855281889 is a `hidden beast` number, since 8 + 552 + 8 + 1 + 8 + 89 = 666.

855281889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 855281889 - 2⁷ = 855281761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855281809) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93337 + ... + 102089.

It is an arithmetic number, because the mean of its divisors is an integer number (25211520).

Almost surely, 2^855281889 is an apocalyptic number.

It is an amenable number.

855281889 is a deficient number, since it is larger than the sum of its proper divisors (758255391).

855281889 is a wasteful number, since it uses less digits than its factorization.

855281889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827 (or 8821 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 54.

The square root of 855281889 is about 29245.2028373886. The cubic root of 855281889 is about 949.2262911841.

The spelling of 855281889 in words is "eight hundred fifty-five million, two hundred eighty-one thousand, eight hundred eighty-nine".