6909404 has 12 divisors (see below), whose sum is σ = 12481728. Its totient is φ = 3343200.

The previous prime is 6909391. The next prime is 6909437. The reversal of 6909404 is 4049096.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27737 + ... + 27984.

It is an arithmetic number, because the mean of its divisors is an integer number (1040144).

Almost surely, 2^6909404 is an apocalyptic number.

It is an amenable number.

6909404 is a deficient number, since it is larger than the sum of its proper divisors (5572324).

6909404 is a wasteful number, since it uses less digits than its factorization.

6909404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55756 (or 55754 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6909404 is about 2628.5745186317. The cubic root of 6909404 is about 190.4642754888.

The spelling of 6909404 in words is "six million, nine hundred nine thousand, four hundred four".