6839152909 has 4 divisors (see below), whose sum is σ = 6842729916. Its totient is φ = 6835575904.

The previous prime is 6839152867. The next prime is 6839152937. The reversal of 6839152909 is 9092519386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2727137284 + 4112015625 = 52222^2 + 64125^2 .

It is a cyclic number.

It is not a de Polignac number, because 6839152909 - 2¹¹ = 6839150861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6839152979) 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, 1785634 + ... + 1789459.

It is an arithmetic number, because the mean of its divisors is an integer number (1710682479).

Almost surely, 2^6839152909 is an apocalyptic number.

It is an amenable number.

6839152909 is a deficient number, since it is larger than the sum of its proper divisors (3577007).

6839152909 is a wasteful number, since it uses less digits than its factorization.

6839152909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577006.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The square root of 6839152909 is about 82699.1711506228. The cubic root of 6839152909 is about 1898.1656265091.

The spelling of 6839152909 in words is "six billion, eight hundred thirty-nine million, one hundred fifty-two thousand, nine hundred nine".