14139647947 has 2 divisors, whose sum is σ = 14139647948. Its totient is φ = 14139647946.

The previous prime is 14139647909. The next prime is 14139648037. The reversal of 14139647947 is 74974693141.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14139647947 is a prime.

It is not a weakly prime, because it can be changed into another prime (14139647147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7069823973 + 7069823974.

It is an arithmetic number, because the mean of its divisors is an integer number (7069823974).

Almost surely, 2^14139647947 is an apocalyptic number.

14139647947 is a deficient number, since it is larger than the sum of its proper divisors (1).

14139647947 is an equidigital number, since it uses as much as digits as its factorization.

14139647947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The spelling of 14139647947 in words is "fourteen billion, one hundred thirty-nine million, six hundred forty-seven thousand, nine hundred forty-seven".