13944437 has 8 divisors (see below), whose sum is σ = 15900696. Its totient is φ = 12114432.

The previous prime is 13944407. The next prime is 13944439. The reversal of 13944437 is 73444931.

It can be written as a sum of positive squares in 4 ways, for example, as 1681 + 13942756 = 41^2 + 3734^2 .

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 13944437 - 2⁶ = 13944373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13944397 and 13944406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13944439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31328 + ... + 31769.

It is an arithmetic number, because the mean of its divisors is an integer number (1987587).

Almost surely, 2^13944437 is an apocalyptic number.

13944437 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13944437 is a deficient number, since it is larger than the sum of its proper divisors (1956259).

13944437 is a wasteful number, since it uses less digits than its factorization.

13944437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63127.

The product of its digits is 36288, while the sum is 35.

The square root of 13944437 is about 3734.2250869491. The cubic root of 13944437 is about 240.6949590701.

The spelling of 13944437 in words is "thirteen million, nine hundred forty-four thousand, four hundred thirty-seven".