13946289 has 8 divisors (see below), whose sum is σ = 21251520. Its totient is φ = 7969296.

The previous prime is 13946281. The next prime is 13946291. The reversal of 13946289 is 98264931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13946289 - 2³ = 13946281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13946289.

It is not an unprimeable number, because it can be changed into a prime (13946281) 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 7 ways as a sum of consecutive naturals, for example, 332034 + ... + 332075.

It is an arithmetic number, because the mean of its divisors is an integer number (2656440).

Almost surely, 2^13946289 is an apocalyptic number.

It is an amenable number.

13946289 is a deficient number, since it is larger than the sum of its proper divisors (7305231).

13946289 is an equidigital number, since it uses as much as digits as its factorization.

13946289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664119.

The product of its digits is 93312, while the sum is 42.

The square root of 13946289 is about 3734.4730551980. The cubic root of 13946289 is about 240.7056143905.

The spelling of 13946289 in words is "thirteen million, nine hundred forty-six thousand, two hundred eighty-nine".