8226989 has 2 divisors, whose sum is σ = 8226990. Its totient is φ = 8226988.

The previous prime is 8226973. The next prime is 8226991. The reversal of 8226989 is 9896228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 218089 = 2830^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 8226989 - 2⁴ = 8226973 is a prime.

It is a super-2 number, since 2×8226989² = 135366696012242, which contains 22 as substring.

Together with 8226991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8226949) 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, 4113494 + 4113495.

It is an arithmetic number, because the mean of its divisors is an integer number (4113495).

Almost surely, 2^8226989 is an apocalyptic number.

It is an amenable number.

8226989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8226989 is an equidigital number, since it uses as much as digits as its factorization.

8226989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 8226989 is about 2868.2728252382. The cubic root of 8226989 is about 201.8739615010.

The spelling of 8226989 in words is "eight million, two hundred twenty-six thousand, nine hundred eighty-nine".