13887001 has 2 divisors, whose sum is σ = 13887002. Its totient is φ = 13887000.

The previous prime is 13886993. The next prime is 13887019. The reversal of 13887001 is 10078831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 491401 = 3660^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 13887001 - 2³ = 13886993 is a prime.

It is not a weakly prime, because it can be changed into another prime (13887061) 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 as a sum of consecutive naturals, namely, 6943500 + 6943501.

It is an arithmetic number, because the mean of its divisors is an integer number (6943501).

Almost surely, 2^13887001 is an apocalyptic number.

It is an amenable number.

13887001 is a deficient number, since it is larger than the sum of its proper divisors (1).

13887001 is an equidigital number, since it uses as much as digits as its factorization.

13887001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 13887001 is about 3726.5266670185. The cubic root of 13887001 is about 240.3640366633.

The spelling of 13887001 in words is "thirteen million, eight hundred eighty-seven thousand, one".