13944397 has 4 divisors (see below), whose sum is σ = 14036896. Its totient is φ = 13851900.

The previous prime is 13944379. The next prime is 13944401. The reversal of 13944397 is 79344931.

It is a happy number.

13944397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79344931 = 19 ⋅4176049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13944397 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 (13944367) 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, 46023 + ... + 46324.

It is an arithmetic number, because the mean of its divisors is an integer number (3509224).

Almost surely, 2^13944397 is an apocalyptic number.

It is an amenable number.

13944397 is a deficient number, since it is larger than the sum of its proper divisors (92499).

13944397 is an equidigital number, since it uses as much as digits as its factorization.

13944397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92498.

The product of its digits is 81648, while the sum is 40.

The square root of 13944397 is about 3734.2197310817. The cubic root of 13944397 is about 240.6947289232.

It can be divided in two parts, 13944 and 397, that added together give a palindrome (14341).

The spelling of 13944397 in words is "thirteen million, nine hundred forty-four thousand, three hundred ninety-seven".