280559089 has 2 divisors, whose sum is σ = 280559090. Its totient is φ = 280559088.

The previous prime is 280559087. The next prime is 280559119. The reversal of 280559089 is 980955082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249008400 + 31550689 = 15780^2 + 5617^2 .

It is a cyclic number.

It is not a de Polignac number, because 280559089 - 2¹ = 280559087 is a prime.

Together with 280559087, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (280559087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140279544 + 140279545.

It is an arithmetic number, because the mean of its divisors is an integer number (140279545).

Almost surely, 2^280559089 is an apocalyptic number.

It is an amenable number.

280559089 is a deficient number, since it is larger than the sum of its proper divisors (1).

280559089 is an equidigital number, since it uses as much as digits as its factorization.

280559089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 280559089 is about 16749.8981787950. The cubic root of 280559089 is about 654.6484052074.

The spelling of 280559089 in words is "two hundred eighty million, five hundred fifty-nine thousand, eighty-nine".