8464889 has 2 divisors, whose sum is σ = 8464890. Its totient is φ = 8464888.

The previous prime is 8464873. The next prime is 8464903. The reversal of 8464889 is 9884648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7812025 + 652864 = 2795^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 8464889 - 2⁴ = 8464873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8466889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4232444 + 4232445.

It is an arithmetic number, because the mean of its divisors is an integer number (4232445).

Almost surely, 2^8464889 is an apocalyptic number.

It is an amenable number.

8464889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8464889 is an equidigital number, since it uses as much as digits as its factorization.

8464889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 47.

The square root of 8464889 is about 2909.4482294758. The cubic root of 8464889 is about 203.8013653477.

The spelling of 8464889 in words is "eight million, four hundred sixty-four thousand, eight hundred eighty-nine".