289994312917 has 2 divisors, whose sum is σ = 289994312918. Its totient is φ = 289994312916.

The previous prime is 289994312903. The next prime is 289994312957. The reversal of 289994312917 is 719213499982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233442619281 + 56551693636 = 483159^2 + 237806^2 .

It is a cyclic number.

It is not a de Polignac number, because 289994312917 - 2¹¹ = 289994310869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289994312957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144997156458 + 144997156459.

It is an arithmetic number, because the mean of its divisors is an integer number (144997156459).

Almost surely, 2^289994312917 is an apocalyptic number.

It is an amenable number.

289994312917 is a deficient number, since it is larger than the sum of its proper divisors (1).

289994312917 is an equidigital number, since it uses as much as digits as its factorization.

289994312917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 64.

The spelling of 289994312917 in words is "two hundred eighty-nine billion, nine hundred ninety-four million, three hundred twelve thousand, nine hundred seventeen".