8449649 has 16 divisors (see below), whose sum is σ = 9483264. Its totient is φ = 7478400.

The previous prime is 8449627. The next prime is 8449667. The reversal of 8449649 is 9469448.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8449649 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44144 + ... + 44334.

It is an arithmetic number, because the mean of its divisors is an integer number (592704).

Almost surely, 2^8449649 is an apocalyptic number.

It is an amenable number.

8449649 is a deficient number, since it is larger than the sum of its proper divisors (1033615).

8449649 is a wasteful number, since it uses less digits than its factorization.

8449649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 248832, while the sum is 44.

The square root of 8449649 is about 2906.8279962874. The cubic root of 8449649 is about 203.6789853762.

The spelling of 8449649 in words is "eight million, four hundred forty-nine thousand, six hundred forty-nine".