8447489 has 2 divisors, whose sum is σ = 8447490. Its totient is φ = 8447488.

The previous prime is 8447477. The next prime is 8447501. The reversal of 8447489 is 9847448.

It is a balanced prime because it is at equal distance from previous prime (8447477) and next prime (8447501).

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 8464 = 2905^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 8447489 - 2²⁰ = 7398913 is a prime.

It is not a weakly prime, because it can be changed into another prime (8447429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223744 + 4223745.

It is an arithmetic number, because the mean of its divisors is an integer number (4223745).

Almost surely, 2^8447489 is an apocalyptic number.

It is an amenable number.

8447489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8447489 is an equidigital number, since it uses as much as digits as its factorization.

8447489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The square root of 8447489 is about 2906.4564335286. The cubic root of 8447489 is about 203.6616282803.

The spelling of 8447489 in words is "eight million, four hundred forty-seven thousand, four hundred eighty-nine".