289007189 has 2 divisors, whose sum is σ = 289007190. Its totient is φ = 289007188.

The previous prime is 289007179. The next prime is 289007207. The reversal of 289007189 is 981700982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281400625 + 7606564 = 16775^2 + 2758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289007189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289007179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144503594 + 144503595.

It is an arithmetic number, because the mean of its divisors is an integer number (144503595).

Almost surely, 2^289007189 is an apocalyptic number.

It is an amenable number.

289007189 is a deficient number, since it is larger than the sum of its proper divisors (1).

289007189 is an equidigital number, since it uses as much as digits as its factorization.

289007189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 289007189 is about 17000.2114398616. The cubic root of 289007189 is about 661.1543839220.

The spelling of 289007189 in words is "two hundred eighty-nine million, seven thousand, one hundred eighty-nine".