6809949 has 12 divisors (see below), whose sum is σ = 9903712. Its totient is φ = 4509000.

The previous prime is 6809927. The next prime is 6809981. The reversal of 6809949 is 9499086.

It is not a de Polignac number, because 6809949 - 2¹¹ = 6807901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1147 + ... + 3864.

Almost surely, 2^6809949 is an apocalyptic number.

It is an amenable number.

6809949 is a deficient number, since it is larger than the sum of its proper divisors (3093763).

6809949 is a wasteful number, since it uses less digits than its factorization.

6809949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6809949 is about 2609.5878985005. The cubic root of 6809949 is about 189.5459982136.

The spelling of 6809949 in words is "six million, eight hundred nine thousand, nine hundred forty-nine".