6309909 has 12 divisors (see below), whose sum is σ = 9225216. Its totient is φ = 4155432.

The previous prime is 6309887. The next prime is 6309911. The reversal of 6309909 is 9099036.

6309909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6309909 - 2⁷ = 6309781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6309959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3477 + ... + 4970.

It is an arithmetic number, because the mean of its divisors is an integer number (768768).

Almost surely, 2^6309909 is an apocalyptic number.

It is an amenable number.

6309909 is a deficient number, since it is larger than the sum of its proper divisors (2915307).

6309909 is a wasteful number, since it uses less digits than its factorization.

6309909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536 (or 8533 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 6309909 is about 2511.9532240868. The cubic root of 6309909 is about 184.7882554239.

The spelling of 6309909 in words is "six million, three hundred nine thousand, nine hundred nine".