8239249 has 2 divisors, whose sum is σ = 8239250. Its totient is φ = 8239248.

The previous prime is 8239247. The next prime is 8239261. The reversal of 8239249 is 9429328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7879249 + 360000 = 2807^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 8239249 - 2¹ = 8239247 is a prime.

Together with 8239247, it forms a pair of twin primes.

It is a Chen prime.

8239249 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8239247) 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, 4119624 + 4119625.

It is an arithmetic number, because the mean of its divisors is an integer number (4119625).

Almost surely, 2^8239249 is an apocalyptic number.

It is an amenable number.

8239249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8239249 is an equidigital number, since it uses as much as digits as its factorization.

8239249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 8239249 is about 2870.4092042773. The cubic root of 8239249 is about 201.9741904089.

The spelling of 8239249 in words is "eight million, two hundred thirty-nine thousand, two hundred forty-nine".