13893844 has 12 divisors (see below), whose sum is σ = 24773364. Its totient is φ = 6815744.

The previous prime is 13893839. The next prime is 13893853. The reversal of 13893844 is 44839831.

It can be written as a sum of positive squares in 2 ways, for example, as 12816400 + 1077444 = 3580^2 + 1038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13893797 and 13893806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32557 + ... + 32980.

It is an arithmetic number, because the mean of its divisors is an integer number (2064447).

Almost surely, 2^13893844 is an apocalyptic number.

It is an amenable number.

13893844 is a deficient number, since it is larger than the sum of its proper divisors (10879520).

13893844 is a wasteful number, since it uses less digits than its factorization.

13893844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65594 (or 65592 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 13893844 is about 3727.4447011324. Note that the first 3 decimals coincide. The cubic root of 13893844 is about 240.4035110132.

The spelling of 13893844 in words is "thirteen million, eight hundred ninety-three thousand, eight hundred forty-four".