8556089 has 2 divisors, whose sum is σ = 8556090. Its totient is φ = 8556088.

The previous prime is 8556071. The next prime is 8556091. The reversal of 8556089 is 9806558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8219689 + 336400 = 2867^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 8556089 - 2¹² = 8551993 is a prime.

Together with 8556091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8556059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278044 + 4278045.

It is an arithmetic number, because the mean of its divisors is an integer number (4278045).

Almost surely, 2^8556089 is an apocalyptic number.

It is an amenable number.

8556089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8556089 is an equidigital number, since it uses as much as digits as its factorization.

8556089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 8556089 is about 2925.0793151639. The cubic root of 8556089 is about 204.5306653520.

The spelling of 8556089 in words is "eight million, five hundred fifty-six thousand, eighty-nine".