14139647 has 4 divisors (see below), whose sum is σ = 14468520. Its totient is φ = 13810776.

The previous prime is 14139637. The next prime is 14139649. The reversal of 14139647 is 74693141.

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

It is a cyclic number.

It is not a de Polignac number, because 14139647 - 2²² = 9945343 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 (14139649) 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, 164372 + ... + 164457.

It is an arithmetic number, because the mean of its divisors is an integer number (3617130).

Almost surely, 2^14139647 is an apocalyptic number.

14139647 is a deficient number, since it is larger than the sum of its proper divisors (328873).

14139647 is an equidigital number, since it uses as much as digits as its factorization.

14139647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328872.

The product of its digits is 18144, while the sum is 35.

The square root of 14139647 is about 3760.2721975942. The cubic root of 14139647 is about 241.8129317243.

The spelling of 14139647 in words is "fourteen million, one hundred thirty-nine thousand, six hundred forty-seven".