13881589 has 2 divisors, whose sum is σ = 13881590. Its totient is φ = 13881588.

The previous prime is 13881563. The next prime is 13881611. The reversal of 13881589 is 98518831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 6275025 = 2758^2 + 2505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13881589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13881509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6940794 + 6940795.

It is an arithmetic number, because the mean of its divisors is an integer number (6940795).

Almost surely, 2^13881589 is an apocalyptic number.

It is an amenable number.

13881589 is a deficient number, since it is larger than the sum of its proper divisors (1).

13881589 is an equidigital number, since it uses as much as digits as its factorization.

13881589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 43.

The square root of 13881589 is about 3725.8004509098. The cubic root of 13881589 is about 240.3328079579.

The spelling of 13881589 in words is "thirteen million, eight hundred eighty-one thousand, five hundred eighty-nine".