13966549 has 4 divisors (see below), whose sum is σ = 13978764. Its totient is φ = 13954336.

The previous prime is 13966483. The next prime is 13966553. The reversal of 13966549 is 94566931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94566931 = 37 ⋅2555863.

It can be written as a sum of positive squares in 2 ways, for example, as 11662225 + 2304324 = 3415^2 + 1518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13966549 is a prime.

It is a super-3 number, since 3×13966549³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13966949) 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, 4192 + ... + 6745.

It is an arithmetic number, because the mean of its divisors is an integer number (3494691).

Almost surely, 2^13966549 is an apocalyptic number.

It is an amenable number.

13966549 is a deficient number, since it is larger than the sum of its proper divisors (12215).

13966549 is a wasteful number, since it uses less digits than its factorization.

13966549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214.

The product of its digits is 174960, while the sum is 43.

The square root of 13966549 is about 3737.1846355244. The cubic root of 13966549 is about 240.8221169757.

The spelling of 13966549 in words is "thirteen million, nine hundred sixty-six thousand, five hundred forty-nine".