6339947 has 2 divisors, whose sum is σ = 6339948. Its totient is φ = 6339946.

The previous prime is 6339937. The next prime is 6339989. The reversal of 6339947 is 7499336.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6339947 - 2¹² = 6335851 is a prime.

It is not a weakly prime, because it can be changed into another prime (6339937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3169973 + 3169974.

It is an arithmetic number, because the mean of its divisors is an integer number (3169974).

Almost surely, 2^6339947 is an apocalyptic number.

6339947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6339947 is an equidigital number, since it uses as much as digits as its factorization.

6339947 is an odious number, because the sum of its binary digits is odd.

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

The square root of 6339947 is about 2517.9251378864. The cubic root of 6339947 is about 185.0810163783.

The spelling of 6339947 in words is "six million, three hundred thirty-nine thousand, nine hundred forty-seven".