8427247 has 2 divisors, whose sum is σ = 8427248. Its totient is φ = 8427246.

The previous prime is 8427233. The next prime is 8427271. The reversal of 8427247 is 7427248.

8427247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8427247 - 2¹⁹ = 7902959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8427217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213623 + 4213624.

It is an arithmetic number, because the mean of its divisors is an integer number (4213624).

Almost surely, 2^8427247 is an apocalyptic number.

8427247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8427247 is an equidigital number, since it uses as much as digits as its factorization.

8427247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 34.

The square root of 8427247 is about 2902.9720976957. The cubic root of 8427247 is about 203.4988258237.

Subtracting from 8427247 its reverse (7427248), we obtain a palindrome (999999).

The spelling of 8427247 in words is "eight million, four hundred twenty-seven thousand, two hundred forty-seven".