13966789 has 4 divisors (see below), whose sum is σ = 13989024. Its totient is φ = 13944556.

The previous prime is 13966783. The next prime is 13966793. The reversal of 13966789 is 98766931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98766931 = 53 ⋅1863527.

It is a cyclic number.

It is not a de Polignac number, because 13966789 - 2³ = 13966781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13966781) 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 in 3 ways as a sum of consecutive naturals, for example, 10147 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (3497256).

Almost surely, 2^13966789 is an apocalyptic number.

It is an amenable number.

13966789 is a deficient number, since it is larger than the sum of its proper divisors (22235).

13966789 is an equidigital number, since it uses as much as digits as its factorization.

13966789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234.

The product of its digits is 489888, while the sum is 49.

The square root of 13966789 is about 3737.2167451193. The cubic root of 13966789 is about 240.8234963901.

The spelling of 13966789 in words is "thirteen million, nine hundred sixty-six thousand, seven hundred eighty-nine".