6809199 has 4 divisors (see below), whose sum is σ = 9078936. Its totient is φ = 4539464.

The previous prime is 6809191. The next prime is 6809203. The reversal of 6809199 is 9919086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6809199 - 2³ = 6809191 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 6809199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809191) 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, 1134864 + ... + 1134869.

It is an arithmetic number, because the mean of its divisors is an integer number (2269734).

Almost surely, 2^6809199 is an apocalyptic number.

6809199 is a deficient number, since it is larger than the sum of its proper divisors (2269737).

6809199 is a wasteful number, since it uses less digits than its factorization.

6809199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269736.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 6809199 is about 2609.4441936934. Note that the first 3 decimals coincide. The cubic root of 6809199 is about 189.5390395360.

The spelling of 6809199 in words is "six million, eight hundred nine thousand, one hundred ninety-nine".