8340989 has 2 divisors, whose sum is σ = 8340990. Its totient is φ = 8340988.

The previous prime is 8340977. The next prime is 8341001. The reversal of 8340989 is 9890438.

It is a balanced prime because it is at equal distance from previous prime (8340977) and next prime (8341001).

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 444889 = 2810^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 8340989 - 2⁸ = 8340733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8343989) 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, 4170494 + 4170495.

It is an arithmetic number, because the mean of its divisors is an integer number (4170495).

Almost surely, 2^8340989 is an apocalyptic number.

It is an amenable number.

8340989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340989 is an equidigital number, since it uses as much as digits as its factorization.

8340989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 8340989 is about 2888.0770419087. The cubic root of 8340989 is about 202.8021319317.

The spelling of 8340989 in words is "eight million, three hundred forty thousand, nine hundred eighty-nine".