13727947 has 4 divisors (see below), whose sum is σ = 14170816. Its totient is φ = 13285080.

The previous prime is 13727939. The next prime is 13727953. The reversal of 13727947 is 74972731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74972731 = 211 ⋅355321.

It is a cyclic number.

It is not a de Polignac number, because 13727947 - 2³ = 13727939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13727927) 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 in 3 ways as a sum of consecutive naturals, for example, 221388 + ... + 221449.

It is an arithmetic number, because the mean of its divisors is an integer number (3542704).

Almost surely, 2^13727947 is an apocalyptic number.

13727947 is a deficient number, since it is larger than the sum of its proper divisors (442869).

13727947 is an equidigital number, since it uses as much as digits as its factorization.

13727947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442868.

The product of its digits is 74088, while the sum is 40.

The square root of 13727947 is about 3705.1244243615. The cubic root of 13727947 is about 239.4428453101.

The spelling of 13727947 in words is "thirteen million, seven hundred twenty-seven thousand, nine hundred forty-seven".