13866841 has 2 divisors, whose sum is σ = 13866842. Its totient is φ = 13866840.

The previous prime is 13866821. The next prime is 13866863. The reversal of 13866841 is 14866831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10272025 + 3594816 = 3205^2 + 1896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13866841 is a prime.

It is equal to p₉₀₁₉₉₉ and since 13866841 and 901999 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13866841.

It is not a weakly prime, because it can be changed into another prime (13866821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6933420 + 6933421.

It is an arithmetic number, because the mean of its divisors is an integer number (6933421).

Almost surely, 2^13866841 is an apocalyptic number.

It is an amenable number.

13866841 is a deficient number, since it is larger than the sum of its proper divisors (1).

13866841 is an equidigital number, since it uses as much as digits as its factorization.

13866841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 13866841 is about 3723.8207529364. The cubic root of 13866841 is about 240.2476667873.

The spelling of 13866841 in words is "thirteen million, eight hundred sixty-six thousand, eight hundred forty-one".