13937865 has 16 divisors (see below), whose sum is σ = 22680000. Its totient is φ = 7307072.

The previous prime is 13937851. The next prime is 13937921. The reversal of 13937865 is 56873931.

13937865 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13937865 - 2¹⁰ = 13936841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6990 + ... + 8759.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^13937865 is an apocalyptic number.

13937865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13937865 is a deficient number, since it is larger than the sum of its proper divisors (8742135).

13937865 is a wasteful number, since it uses less digits than its factorization.

13937865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15816.

The product of its digits is 136080, while the sum is 42.

The square root of 13937865 is about 3733.3450148627. The cubic root of 13937865 is about 240.6571400258.

The spelling of 13937865 in words is "thirteen million, nine hundred thirty-seven thousand, eight hundred sixty-five".