6496449209 has 4 divisors (see below), whose sum is σ = 6501998160. Its totient is φ = 6490900260.

The previous prime is 6496449151. The next prime is 6496449217. The reversal of 6496449209 is 9029446946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6496449209 - 2²⁰ = 6495400633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6496449229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772719 + ... + 2775060.

It is an arithmetic number, because the mean of its divisors is an integer number (1625499540).

Almost surely, 2^6496449209 is an apocalyptic number.

It is an amenable number.

6496449209 is a deficient number, since it is larger than the sum of its proper divisors (5548951).

6496449209 is a wasteful number, since it uses less digits than its factorization.

6496449209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548950.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The square root of 6496449209 is about 80600.5534038073. The cubic root of 6496449209 is about 1865.9156865859.

The spelling of 6496449209 in words is "six billion, four hundred ninety-six million, four hundred forty-nine thousand, two hundred nine".