8639089 has 2 divisors, whose sum is σ = 8639090. Its totient is φ = 8639088.

The previous prime is 8639063. The next prime is 8639107. The reversal of 8639089 is 9809368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8381025 + 258064 = 2895^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 8639089 - 2²¹ = 6541937 is a prime.

It is a weakly prime.

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 as a sum of consecutive naturals, namely, 4319544 + 4319545.

It is an arithmetic number, because the mean of its divisors is an integer number (4319545).

Almost surely, 2^8639089 is an apocalyptic number.

It is an amenable number.

8639089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8639089 is an equidigital number, since it uses as much as digits as its factorization.

8639089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 8639089 is about 2939.2327230078. The cubic root of 8639089 is about 205.1899013658.

The spelling of 8639089 in words is "eight million, six hundred thirty-nine thousand, eighty-nine".