6449907 has 8 divisors (see below), whose sum is σ = 8648640. Its totient is φ = 4275560.

The previous prime is 6449903. The next prime is 6449909. The reversal of 6449907 is 7099446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6449907 - 2² = 6449903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6449903) 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 7 ways as a sum of consecutive naturals, for example, 5469 + ... + 6542.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^6449907 is an apocalyptic number.

6449907 is a deficient number, since it is larger than the sum of its proper divisors (2198733).

6449907 is a wasteful number, since it uses less digits than its factorization.

6449907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12193.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 6449907 is about 2539.6667104169. Note that the first 3 decimals coincide. The cubic root of 6449907 is about 186.1449038479.

The spelling of 6449907 in words is "six million, four hundred forty-nine thousand, nine hundred seven".