6347939 has 4 divisors (see below), whose sum is σ = 6836256. Its totient is φ = 5859624.

The previous prime is 6347927. The next prime is 6347941. The reversal of 6347939 is 9397436.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6347939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6347896 and 6347905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6347909) 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 3 ways as a sum of consecutive naturals, for example, 244139 + ... + 244164.

It is an arithmetic number, because the mean of its divisors is an integer number (1709064).

Almost surely, 2^6347939 is an apocalyptic number.

6347939 is a deficient number, since it is larger than the sum of its proper divisors (488317).

6347939 is a wasteful number, since it uses less digits than its factorization.

6347939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488316.

The product of its digits is 122472, while the sum is 41.

The square root of 6347939 is about 2519.5116590324. The cubic root of 6347939 is about 185.1587534310.

The spelling of 6347939 in words is "six million, three hundred forty-seven thousand, nine hundred thirty-nine".