289506068909 has 2 divisors, whose sum is σ = 289506068910. Its totient is φ = 289506068908.

The previous prime is 289506068849. The next prime is 289506068921. The reversal of 289506068909 is 909860605982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255944928100 + 33561140809 = 505910^2 + 183197^2 .

It is a cyclic number.

It is not a de Polignac number, because 289506068909 - 2²⁸ = 289237633453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289506068989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144753034454 + 144753034455.

It is an arithmetic number, because the mean of its divisors is an integer number (144753034455).

Almost surely, 2^289506068909 is an apocalyptic number.

It is an amenable number.

289506068909 is a deficient number, since it is larger than the sum of its proper divisors (1).

289506068909 is an equidigital number, since it uses as much as digits as its factorization.

289506068909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 289506068909 in words is "two hundred eighty-nine billion, five hundred six million, sixty-eight thousand, nine hundred nine".