6449209 has 12 divisors (see below), whose sum is σ = 7214592. Its totient is φ = 5756400.

The previous prime is 6449197. The next prime is 6449213. The reversal of 6449209 is 9029446.

It is not a de Polignac number, because 6449209 - 2⁷ = 6449081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6449309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4624 + ... + 5854.

It is an arithmetic number, because the mean of its divisors is an integer number (601216).

Almost surely, 2^6449209 is an apocalyptic number.

It is an amenable number.

6449209 is a deficient number, since it is larger than the sum of its proper divisors (765383).

6449209 is a wasteful number, since it uses less digits than its factorization.

6449209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6449209 is about 2539.5292870924. The cubic root of 6449209 is about 186.1381888244.

The spelling of 6449209 in words is "six million, four hundred forty-nine thousand, two hundred nine".