13866844 has 6 divisors (see below), whose sum is σ = 24266984. Its totient is φ = 6933420.

The previous prime is 13866841. The next prime is 13866863. The reversal of 13866844 is 44866831.

It is a junction number, because it is equal to n+sod(n) for n = 13866797 and 13866806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13866841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1733352 + ... + 1733359.

Almost surely, 2^13866844 is an apocalyptic number.

It is an amenable number.

13866844 is a deficient number, since it is larger than the sum of its proper divisors (10400140).

13866844 is a wasteful number, since it uses less digits than its factorization.

13866844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466715 (or 3466713 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 13866844 is about 3723.8211557485. The cubic root of 13866844 is about 240.2476841126.

The spelling of 13866844 in words is "thirteen million, eight hundred sixty-six thousand, eight hundred forty-four".