6809039 has 4 divisors (see below), whose sum is σ = 6846840. Its totient is φ = 6771240.

The previous prime is 6809029. The next prime is 6809063. The reversal of 6809039 is 9309086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9309086 = 2 ⋅4654543.

It is a cyclic number.

It is not a de Polignac number, because 6809039 - 2¹² = 6804943 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809029) 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, 18629 + ... + 18990.

It is an arithmetic number, because the mean of its divisors is an integer number (1711710).

Almost surely, 2^6809039 is an apocalyptic number.

6809039 is a deficient number, since it is larger than the sum of its proper divisors (37801).

6809039 is a wasteful number, since it uses less digits than its factorization.

6809039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6809039 is about 2609.4135356436. The cubic root of 6809039 is about 189.5375549520.

The spelling of 6809039 in words is "six million, eight hundred nine thousand, thirty-nine".