89008009 has 2 divisors, whose sum is σ = 89008010. Its totient is φ = 89008008.

The previous prime is 89008001. The next prime is 89008019. The reversal of 89008009 is 90080098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 16281225 = 8528^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 89008009 - 2³ = 89008001 is a prime.

It is a super-2 number, since 2×89008009² = 15844851332288162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89008001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44504004 + 44504005.

It is an arithmetic number, because the mean of its divisors is an integer number (44504005).

Almost surely, 2^89008009 is an apocalyptic number.

It is an amenable number.

89008009 is a deficient number, since it is larger than the sum of its proper divisors (1).

89008009 is an equidigital number, since it uses as much as digits as its factorization.

89008009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 89008009 is about 9434.4055986586. The cubic root of 89008009 is about 446.4879017198.

The spelling of 89008009 in words is "eighty-nine million, eight thousand, nine".