6789402809 has 12 divisors (see below), whose sum is σ = 7899225984. Its totient is φ = 5818494024.

The previous prime is 6789402797. The next prime is 6789402817. The reversal of 6789402809 is 9082049876.

It is not a de Polignac number, because 6789402809 - 2²⁴ = 6772625593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6789402859) 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, 513212 + ... + 526274.

It is an arithmetic number, because the mean of its divisors is an integer number (658268832).

Almost surely, 2^6789402809 is an apocalyptic number.

It is an amenable number.

6789402809 is a deficient number, since it is larger than the sum of its proper divisors (1109823175).

6789402809 is a wasteful number, since it uses less digits than its factorization.

6789402809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23684 (or 23677 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 6789402809 is about 82397.8325503772. The cubic root of 6789402809 is about 1893.5518075486.

The spelling of 6789402809 in words is "six billion, seven hundred eighty-nine million, four hundred two thousand, eight hundred nine".