289543361 has 2 divisors, whose sum is σ = 289543362. Its totient is φ = 289543360.

The previous prime is 289543339. The next prime is 289543367. The reversal of 289543361 is 163345982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251412736 + 38130625 = 15856^2 + 6175^2 .

It is a cyclic number.

It is not a de Polignac number, because 289543361 - 2²⁶ = 222434497 is a prime.

It is a super-3 number, since 3×289543361³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (289543367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144771680 + 144771681.

It is an arithmetic number, because the mean of its divisors is an integer number (144771681).

Almost surely, 2^289543361 is an apocalyptic number.

It is an amenable number.

289543361 is a deficient number, since it is larger than the sum of its proper divisors (1).

289543361 is an equidigital number, since it uses as much as digits as its factorization.

289543361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 289543361 is about 17015.9737012021. The cubic root of 289543361 is about 661.5629936809.

The spelling of 289543361 in words is "two hundred eighty-nine million, five hundred forty-three thousand, three hundred sixty-one".