13861589 has 4 divisors (see below), whose sum is σ = 15841824. Its totient is φ = 11881356.

The previous prime is 13861559. The next prime is 13861607. The reversal of 13861589 is 98516831.

13861589 is digitally balanced in base 2 and base 8, because in such bases 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13861589 - 2¹⁶ = 13796053 is a prime.

It is a Duffinian number.

13861589 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13861559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990107 + ... + 990120.

It is an arithmetic number, because the mean of its divisors is an integer number (3960456).

Almost surely, 2^13861589 is an apocalyptic number.

It is an amenable number.

13861589 is a deficient number, since it is larger than the sum of its proper divisors (1980235).

13861589 is an equidigital number, since it uses as much as digits as its factorization.

13861589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980234.

The product of its digits is 51840, while the sum is 41.

The square root of 13861589 is about 3723.1154964626. The cubic root of 13861589 is about 240.2173320707.

The spelling of 13861589 in words is "thirteen million, eight hundred sixty-one thousand, five hundred eighty-nine".