6949809 has 12 divisors (see below), whose sum is σ = 10067200. Its totient is φ = 4620024.

The previous prime is 6949799. The next prime is 6949823. The reversal of 6949809 is 9089496.

It is not a de Polignac number, because 6949809 - 2⁴ = 6949793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6949309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3072 + ... + 4830.

Almost surely, 2^6949809 is an apocalyptic number.

It is an amenable number.

6949809 is a deficient number, since it is larger than the sum of its proper divisors (3117391).

6949809 is a wasteful number, since it uses less digits than its factorization.

6949809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204 (or 2201 counting only the distinct ones).

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

The square root of 6949809 is about 2636.2490398291. The cubic root of 6949809 is about 190.8348215127.

The spelling of 6949809 in words is "six million, nine hundred forty-nine thousand, eight hundred nine".