8247427 has 2 divisors, whose sum is σ = 8247428. Its totient is φ = 8247426.

The previous prime is 8247413. The next prime is 8247451. The reversal of 8247427 is 7247428.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8247427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8247392 and 8247401.

It is not a weakly prime, because it can be changed into another prime (8247487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4123713 + 4123714.

It is an arithmetic number, because the mean of its divisors is an integer number (4123714).

Almost surely, 2^8247427 is an apocalyptic number.

8247427 is a deficient number, since it is larger than the sum of its proper divisors (1).

8247427 is an equidigital number, since it uses as much as digits as its factorization.

8247427 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8247427 is about 2871.8333865320. The cubic root of 8247427 is about 202.0409925629.

Subtracting from 8247427 its reverse (7247428), we obtain a palindrome (999999).

The spelling of 8247427 in words is "eight million, two hundred forty-seven thousand, four hundred twenty-seven".