8224289 has 2 divisors, whose sum is σ = 8224290. Its totient is φ = 8224288.

The previous prime is 8224261. The next prime is 8224291. The reversal of 8224289 is 9824228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7795264 + 429025 = 2792^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 8224289 - 2¹² = 8220193 is a prime.

Together with 8224291, 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 (8224219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112144 + 4112145.

It is an arithmetic number, because the mean of its divisors is an integer number (4112145).

Almost surely, 2^8224289 is an apocalyptic number.

It is an amenable number.

8224289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8224289 is an equidigital number, since it uses as much as digits as its factorization.

8224289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The square root of 8224289 is about 2867.8021200913. The cubic root of 8224289 is about 201.8518748731.

The spelling of 8224289 in words is "eight million, two hundred twenty-four thousand, two hundred eighty-nine".