289489349 has 2 divisors, whose sum is σ = 289489350. Its totient is φ = 289489348.

The previous prime is 289489313. The next prime is 289489351. The reversal of 289489349 is 943984982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195496324 + 93993025 = 13982^2 + 9695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289489349 is a prime.

Together with 289489351, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 289489294 and 289489303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289419349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144744674 + 144744675.

It is an arithmetic number, because the mean of its divisors is an integer number (144744675).

Almost surely, 2^289489349 is an apocalyptic number.

It is an amenable number.

289489349 is a deficient number, since it is larger than the sum of its proper divisors (1).

289489349 is an equidigital number, since it uses as much as digits as its factorization.

289489349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The square root of 289489349 is about 17014.3865302279. The cubic root of 289489349 is about 661.5218546929.

The spelling of 289489349 in words is "two hundred eighty-nine million, four hundred eighty-nine thousand, three hundred forty-nine".