13938685 has 16 divisors (see below), whose sum is σ = 18178560. Its totient is φ = 10221120.

The previous prime is 13938679. The next prime is 13938697. The reversal of 13938685 is 58683931.

It is not a de Polignac number, because 13938685 - 2¹⁹ = 13414397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 5311.

It is an arithmetic number, because the mean of its divisors is an integer number (1136160).

Almost surely, 2^13938685 is an apocalyptic number.

It is an amenable number.

13938685 is a deficient number, since it is larger than the sum of its proper divisors (4239875).

13938685 is a wasteful number, since it uses less digits than its factorization.

13938685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788.

The product of its digits is 155520, while the sum is 43.

The square root of 13938685 is about 3733.4548343324. The cubic root of 13938685 is about 240.6618594235.

The spelling of 13938685 in words is "thirteen million, nine hundred thirty-eight thousand, six hundred eighty-five".