289144871 has 2 divisors, whose sum is σ = 289144872. Its totient is φ = 289144870.

The previous prime is 289144847. The next prime is 289144909. The reversal of 289144871 is 178441982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289144871 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289144171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144572435 + 144572436.

It is an arithmetic number, because the mean of its divisors is an integer number (144572436).

Almost surely, 2^289144871 is an apocalyptic number.

289144871 is a deficient number, since it is larger than the sum of its proper divisors (1).

289144871 is an equidigital number, since it uses as much as digits as its factorization.

289144871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 44.

The square root of 289144871 is about 17004.2603779171. The cubic root of 289144871 is about 661.2593577887.

The spelling of 289144871 in words is "two hundred eighty-nine million, one hundred forty-four thousand, eight hundred seventy-one".