6909944 has 8 divisors (see below), whose sum is σ = 12956160. Its totient is φ = 3454968.

The previous prime is 6909941. The next prime is 6909949. The reversal of 6909944 is 4499096.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431864 + ... + 431879.

It is an arithmetic number, because the mean of its divisors is an integer number (1619520).

Almost surely, 2^6909944 is an apocalyptic number.

It is an amenable number.

6909944 is a deficient number, since it is larger than the sum of its proper divisors (6046216).

6909944 is a wasteful number, since it uses less digits than its factorization.

6909944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863749 (or 863745 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 6909944 is about 2628.6772338954. The cubic root of 6909944 is about 190.4692372303.

Subtracting from 6909944 its sum of digits (41), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 6909944 in words is "six million, nine hundred nine thousand, nine hundred forty-four".