6499109 has 4 divisors (see below), whose sum is σ = 6515040. Its totient is φ = 6483180.

The previous prime is 6499081. The next prime is 6499111. The reversal of 6499109 is 9019946.

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 6499109 - 2⁸ = 6498853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6499169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7337 + ... + 8174.

It is an arithmetic number, because the mean of its divisors is an integer number (1628760).

Almost surely, 2^6499109 is an apocalyptic number.

It is an amenable number.

6499109 is a deficient number, since it is larger than the sum of its proper divisors (15931).

6499109 is a wasteful number, since it uses less digits than its factorization.

6499109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15930.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 6499109 is about 2549.3350113314. The cubic root of 6499109 is about 186.6170300988.

The spelling of 6499109 in words is "six million, four hundred ninety-nine thousand, one hundred nine".