13891273 has 16 divisors (see below), whose sum is σ = 15692544. Its totient is φ = 12188160.

The previous prime is 13891271. The next prime is 13891289. The reversal of 13891273 is 37219831.

It is a cyclic number.

It is not a de Polignac number, because 13891273 - 2¹ = 13891271 is a prime.

It is a Duffinian number.

Its product of digits (9072) is a multiple of the sum of its prime divisors (432).

It is not an unprimeable number, because it can be changed into a prime (13891271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50011 + ... + 50287.

It is an arithmetic number, because the mean of its divisors is an integer number (980784).

Almost surely, 2^13891273 is an apocalyptic number.

It is an amenable number.

13891273 is a deficient number, since it is larger than the sum of its proper divisors (1801271).

13891273 is a wasteful number, since it uses less digits than its factorization.

13891273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 9072, while the sum is 34.

The square root of 13891273 is about 3727.0998108449. The cubic root of 13891273 is about 240.3886815306.

It can be divided in two parts, 1389 and 1273, that added together give a palindrome (2662).

The spelling of 13891273 in words is "thirteen million, eight hundred ninety-one thousand, two hundred seventy-three".