8242889 has 2 divisors, whose sum is σ = 8242890. Its totient is φ = 8242888.

The previous prime is 8242877. The next prime is 8242919. The reversal of 8242889 is 9882428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 652864 = 2755^2 + 808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8242889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8242849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121444 + 4121445.

It is an arithmetic number, because the mean of its divisors is an integer number (4121445).

Almost surely, 2^8242889 is an apocalyptic number.

It is an amenable number.

8242889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8242889 is an equidigital number, since it uses as much as digits as its factorization.

8242889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 41.

The square root of 8242889 is about 2871.0431902011. The cubic root of 8242889 is about 202.0039292769.

The spelling of 8242889 in words is "eight million, two hundred forty-two thousand, eight hundred eighty-nine".