6847311909 has 16 divisors (see below), whose sum is σ = 9178376832. Its totient is φ = 4540612608.

The previous prime is 6847311907. The next prime is 6847311937. The reversal of 6847311909 is 9091137486.

It is a happy number.

6847311909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6847311909 - 2¹ = 6847311907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847311907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566877 + ... + 578829.

It is an arithmetic number, because the mean of its divisors is an integer number (573648552).

Almost surely, 2^6847311909 is an apocalyptic number.

It is an amenable number.

6847311909 is a deficient number, since it is larger than the sum of its proper divisors (2331064923).

6847311909 is a wasteful number, since it uses less digits than its factorization.

6847311909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 6847311909 is about 82748.4858411319. The cubic root of 6847311909 is about 1898.9201536168.

The spelling of 6847311909 in words is "six billion, eight hundred forty-seven million, three hundred eleven thousand, nine hundred nine".