13444447 has 4 divisors (see below), whose sum is σ = 13504960. Its totient is φ = 13383936.

The previous prime is 13444373. The next prime is 13444469. The reversal of 13444447 is 74444431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13444447 - 2¹⁵ = 13411679 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444477) 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, 29922 + ... + 30367.

It is an arithmetic number, because the mean of its divisors is an integer number (3376240).

Almost surely, 2^13444447 is an apocalyptic number.

13444447 is a deficient number, since it is larger than the sum of its proper divisors (60513).

13444447 is an equidigital number, since it uses as much as digits as its factorization.

13444447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60512.

The product of its digits is 21504, while the sum is 31.

The square root of 13444447 is about 3666.6670151515. The cubic root of 13444447 is about 237.7830980571.

Adding to 13444447 its reverse (74444431), we get a palindrome (87888878).

The spelling of 13444447 in words is "thirteen million, four hundred forty-four thousand, four hundred forty-seven".