13886989 has 2 divisors, whose sum is σ = 13886990. Its totient is φ = 13886988.

The previous prime is 13886981. The next prime is 13886993. The reversal of 13886989 is 98968831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 4338889 = 3090^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 13886989 - 2³ = 13886981 is a prime.

It is a super-2 number, since 2×13886989² = 385696926972242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13886981) 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, 6943494 + 6943495.

It is an arithmetic number, because the mean of its divisors is an integer number (6943495).

Almost surely, 2^13886989 is an apocalyptic number.

It is an amenable number.

13886989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13886989 is an equidigital number, since it uses as much as digits as its factorization.

13886989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 52.

The square root of 13886989 is about 3726.5250569398. The cubic root of 13886989 is about 240.3639674290.

The spelling of 13886989 in words is "thirteen million, eight hundred eighty-six thousand, nine hundred eighty-nine".