8731089 has 12 divisors (see below), whose sum is σ = 13275600. Its totient is φ = 5514264.

The previous prime is 8731069. The next prime is 8731097. The reversal of 8731089 is 9801378.

8731089 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8731089 - 2⁹ = 8730577 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8731039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25359 + ... + 25700.

It is an arithmetic number, because the mean of its divisors is an integer number (1106300).

Almost surely, 2^8731089 is an apocalyptic number.

It is an amenable number.

8731089 is a deficient number, since it is larger than the sum of its proper divisors (4544511).

8731089 is a wasteful number, since it uses less digits than its factorization.

8731089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51084 (or 51081 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8731089 is about 2954.8416201211. The cubic root of 8731089 is about 205.9157052922.

The spelling of 8731089 in words is "eight million, seven hundred thirty-one thousand, eighty-nine".