6499009 has 4 divisors (see below), whose sum is σ = 7089840. Its totient is φ = 5908180.

The previous prime is 6498979. The next prime is 6499037. The reversal of 6499009 is 9009946.

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 6499009 - 2⁹ = 6498497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6499039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295399 + ... + 295420.

It is an arithmetic number, because the mean of its divisors is an integer number (1772460).

Almost surely, 2^6499009 is an apocalyptic number.

It is an amenable number.

6499009 is a deficient number, since it is larger than the sum of its proper divisors (590831).

6499009 is a wasteful number, since it uses less digits than its factorization.

6499009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590830.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 6499009 is about 2549.3153982981. The cubic root of 6499009 is about 186.6160729523.

The spelling of 6499009 in words is "six million, four hundred ninety-nine thousand, nine".