13944405 has 8 divisors (see below), whose sum is σ = 22311072. Its totient is φ = 7437008.

The previous prime is 13944401. The next prime is 13944407. The reversal of 13944405 is 50444931.

13944405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13944405 - 2² = 13944401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13944401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464799 + ... + 464828.

It is an arithmetic number, because the mean of its divisors is an integer number (2788884).

Almost surely, 2^13944405 is an apocalyptic number.

13944405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13944405 is a deficient number, since it is larger than the sum of its proper divisors (8366667).

13944405 is an equidigital number, since it uses as much as digits as its factorization.

13944405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929635.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 13944405 is about 3734.2208022558. The cubic root of 13944405 is about 240.6947749526.

It can be divided in two parts, 139 and 44405, that added together give a palindrome (44544).

The spelling of 13944405 in words is "thirteen million, nine hundred forty-four thousand, four hundred five".