6449913 has 12 divisors (see below), whose sum is σ = 9721920. Its totient is φ = 4112856.

The previous prime is 6449909. The next prime is 6449917. The reversal of 6449913 is 3199446.

6449913 is a `hidden beast` number, since 644 + 9 + 9 + 1 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (6449909) and next prime (6449917).

It is not a de Polignac number, because 6449913 - 2² = 6449909 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6449917) 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 11 ways as a sum of consecutive naturals, for example, 15373 + ... + 15786.

It is an arithmetic number, because the mean of its divisors is an integer number (810160).

Almost surely, 2^6449913 is an apocalyptic number.

It is an amenable number.

6449913 is a deficient number, since it is larger than the sum of its proper divisors (3272007).

6449913 is a wasteful number, since it uses less digits than its factorization.

6449913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31188 (or 31185 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6449913 is about 2539.6678916740. The cubic root of 6449913 is about 186.1449615680.

The spelling of 6449913 in words is "six million, four hundred forty-nine thousand, nine hundred thirteen".