13887089 has 2 divisors, whose sum is σ = 13887090. Its totient is φ = 13887088.

The previous prime is 13887061. The next prime is 13887091. The reversal of 13887089 is 98078831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 2053489 = 3440^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 13887089 - 2²⁰ = 12838513 is a prime.

Together with 13887091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13887019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6943544 + 6943545.

It is an arithmetic number, because the mean of its divisors is an integer number (6943545).

Almost surely, 2^13887089 is an apocalyptic number.

It is an amenable number.

13887089 is a deficient number, since it is larger than the sum of its proper divisors (1).

13887089 is an equidigital number, since it uses as much as digits as its factorization.

13887089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 13887089 is about 3726.5384742412. The cubic root of 13887089 is about 240.3645443801.

The spelling of 13887089 in words is "thirteen million, eight hundred eighty-seven thousand, eighty-nine".