6209109 has 16 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 4060368.

The previous prime is 6209089. The next prime is 6209111. The reversal of 6209109 is 9019026.

It is a happy number.

It is not a de Polignac number, because 6209109 - 2¹² = 6205013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6209179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739 + ... + 3600.

It is an arithmetic number, because the mean of its divisors is an integer number (585900).

Almost surely, 2^6209109 is an apocalyptic number.

It is an amenable number.

6209109 is a deficient number, since it is larger than the sum of its proper divisors (3165291).

6209109 is a wasteful number, since it uses less digits than its factorization.

6209109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401 (or 4395 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 6209109 is about 2491.8083794706. The cubic root of 6209109 is about 183.7989790300.

The spelling of 6209109 in words is "six million, two hundred nine thousand, one hundred nine".