13875847 has 2 divisors, whose sum is σ = 13875848. Its totient is φ = 13875846.

The previous prime is 13875787. The next prime is 13875881. The reversal of 13875847 is 74857831.

It is a strong prime.

It is an emirp because it is prime and its reverse (74857831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13875847 - 2¹¹ = 13873799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13875047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6937923 + 6937924.

It is an arithmetic number, because the mean of its divisors is an integer number (6937924).

Almost surely, 2^13875847 is an apocalyptic number.

13875847 is a deficient number, since it is larger than the sum of its proper divisors (1).

13875847 is an equidigital number, since it uses as much as digits as its factorization.

13875847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 13875847 is about 3725.0297985385. The cubic root of 13875847 is about 240.2996661876.

The spelling of 13875847 in words is "thirteen million, eight hundred seventy-five thousand, eight hundred forty-seven".