289322641 has 2 divisors, whose sum is σ = 289322642. Its totient is φ = 289322640.

The previous prime is 289322639. The next prime is 289322689. The reversal of 289322641 is 146223982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279057025 + 10265616 = 16705^2 + 3204^2 .

It is a cyclic number.

It is not a de Polignac number, because 289322641 - 2¹ = 289322639 is a prime.

Together with 289322639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 289322641.

It is not a weakly prime, because it can be changed into another prime (289322611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144661320 + 144661321.

It is an arithmetic number, because the mean of its divisors is an integer number (144661321).

Almost surely, 2^289322641 is an apocalyptic number.

It is an amenable number.

289322641 is a deficient number, since it is larger than the sum of its proper divisors (1).

289322641 is an equidigital number, since it uses as much as digits as its factorization.

289322641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 289322641 is about 17009.4867941393. The cubic root of 289322641 is about 661.3948469560.

The spelling of 289322641 in words is "two hundred eighty-nine million, three hundred twenty-two thousand, six hundred forty-one".