13938173 has 4 divisors (see below), whose sum is σ = 13982460. Its totient is φ = 13893888.

The previous prime is 13938163. The next prime is 13938187. The reversal of 13938173 is 37183931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37183931 = 19 ⋅1957049.

It can be written as a sum of positive squares in 2 ways, for example, as 4439449 + 9498724 = 2107^2 + 3082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13938173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21668 + ... + 22301.

It is an arithmetic number, because the mean of its divisors is an integer number (3495615).

Almost surely, 2^13938173 is an apocalyptic number.

It is an amenable number.

13938173 is a deficient number, since it is larger than the sum of its proper divisors (44287).

13938173 is an equidigital number, since it uses as much as digits as its factorization.

13938173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44286.

The product of its digits is 13608, while the sum is 35.

The square root of 13938173 is about 3733.3862645057. The cubic root of 13938173 is about 240.6589126993.

The spelling of 13938173 in words is "thirteen million, nine hundred thirty-eight thousand, one hundred seventy-three".