13890559 has 4 divisors (see below), whose sum is σ = 13973904. Its totient is φ = 13807216.

The previous prime is 13890553. The next prime is 13890563. The reversal of 13890559 is 95509831.

13890559 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95509831 = 2389 ⋅39979.

It is a cyclic number.

It is not a de Polignac number, because 13890559 - 2¹³ = 13882367 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13890553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41422 + ... + 41755.

It is an arithmetic number, because the mean of its divisors is an integer number (3493476).

Almost surely, 2^13890559 is an apocalyptic number.

13890559 is a deficient number, since it is larger than the sum of its proper divisors (83345).

13890559 is an equidigital number, since it uses as much as digits as its factorization.

13890559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83344.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 13890559 is about 3727.0040246826. The cubic root of 13890559 is about 240.3845628665.

The spelling of 13890559 in words is "thirteen million, eight hundred ninety thousand, five hundred fifty-nine".