8389897 has 2 divisors, whose sum is σ = 8389898. Its totient is φ = 8389896.

The previous prime is 8389883. The next prime is 8389907. The reversal of 8389897 is 7989838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7268416 + 1121481 = 2696^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 8389897 - 2⁷ = 8389769 is a prime.

It is not a weakly prime, because it can be changed into another prime (8389837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4194948 + 4194949.

It is an arithmetic number, because the mean of its divisors is an integer number (4194949).

Almost surely, 2^8389897 is an apocalyptic number.

It is an amenable number.

8389897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8389897 is an equidigital number, since it uses as much as digits as its factorization.

8389897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The square root of 8389897 is about 2896.5318917630. The cubic root of 8389897 is about 203.1977414266.

The spelling of 8389897 in words is "eight million, three hundred eighty-nine thousand, eight hundred ninety-seven".