6909844 has 48 divisors (see below), whose sum is σ = 13708800. Its totient is φ = 3031776.

The previous prime is 6909841. The next prime is 6909887. The reversal of 6909844 is 4489096.

It is a junction number, because it is equal to n+sod(n) for n = 6909797 and 6909806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103099 + ... + 103165.

It is an arithmetic number, because the mean of its divisors is an integer number (285600).

Almost surely, 2^6909844 is an apocalyptic number.

It is an amenable number.

6909844 is a deficient number, since it is larger than the sum of its proper divisors (6798956).

6909844 is a wasteful number, since it uses less digits than its factorization.

6909844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6909844 is about 2628.6582128531. The cubic root of 6909844 is about 190.4683184088.

The spelling of 6909844 in words is "six million, nine hundred nine thousand, eight hundred forty-four".