863189089 has 8 divisors (see below), whose sum is σ = 1020519360. Its totient is φ = 714363216.

The previous prime is 863189083. The next prime is 863189123. The reversal of 863189089 is 980981368.

863189089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 863189089 - 2³ = 863189081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863189081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125879 + ... + 2126284.

It is an arithmetic number, because the mean of its divisors is an integer number (127564920).

Almost surely, 2^863189089 is an apocalyptic number.

It is an amenable number.

863189089 is a deficient number, since it is larger than the sum of its proper divisors (157330271).

863189089 is a wasteful number, since it uses less digits than its factorization.

863189089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252199.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 863189089 is about 29380.0797990747. The cubic root of 863189089 is about 952.1425654634.

The spelling of 863189089 in words is "eight hundred sixty-three million, one hundred eighty-nine thousand, eighty-nine".