8449247 has 4 divisors (see below), whose sum is σ = 8487360. Its totient is φ = 8411136.

The previous prime is 8449223. The next prime is 8449249. The reversal of 8449247 is 7429448.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8449247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8449247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449249) 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 in 3 ways as a sum of consecutive naturals, for example, 18722 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (2121840).

Almost surely, 2^8449247 is an apocalyptic number.

8449247 is a deficient number, since it is larger than the sum of its proper divisors (38113).

8449247 is a wasteful number, since it uses less digits than its factorization.

8449247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38112.

The product of its digits is 64512, while the sum is 38.

The square root of 8449247 is about 2906.7588479267. The cubic root of 8449247 is about 203.6757552518.

The spelling of 8449247 in words is "eight million, four hundred forty-nine thousand, two hundred forty-seven".