8280289 has 2 divisors, whose sum is σ = 8280290. Its totient is φ = 8280288.

The previous prime is 8280287. The next prime is 8280331. The reversal of 8280289 is 9820828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 1520289 = 2600^2 + 1233^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280289 - 2¹ = 8280287 is a prime.

Together with 8280287, 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 (8280281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140144 + 4140145.

It is an arithmetic number, because the mean of its divisors is an integer number (4140145).

Almost surely, 2^8280289 is an apocalyptic number.

It is an amenable number.

8280289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280289 is an equidigital number, since it uses as much as digits as its factorization.

8280289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8280289 is about 2877.5491307708. The cubic root of 8280289 is about 202.3089820910.

The spelling of 8280289 in words is "eight million, two hundred eighty thousand, two hundred eighty-nine".