6809388 has 12 divisors (see below), whose sum is σ = 15888600. Its totient is φ = 2269792.

The previous prime is 6809377. The next prime is 6809389. The reversal of 6809388 is 8839086.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6809389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283713 + ... + 283736.

It is an arithmetic number, because the mean of its divisors is an integer number (1324050).

Almost surely, 2^6809388 is an apocalyptic number.

It is an amenable number.

6809388 is an abundant number, since it is smaller than the sum of its proper divisors (9079212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6809388 is a wasteful number, since it uses less digits than its factorization.

6809388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567456 (or 567454 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 6809388 is about 2609.4804080506. The cubic root of 6809388 is about 189.5407931709.

The spelling of 6809388 in words is "six million, eight hundred nine thousand, three hundred eighty-eight".