13441639 has 4 divisors (see below), whose sum is σ = 13449024. Its totient is φ = 13434256.

The previous prime is 13441633. The next prime is 13441643. The reversal of 13441639 is 93614431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93614431 = 307 ⋅304933.

It is a cyclic number.

It is not a de Polignac number, because 13441639 - 2⁷ = 13441511 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13441639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13441633) 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 3 ways as a sum of consecutive naturals, for example, 1194 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (3362256).

Almost surely, 2^13441639 is an apocalyptic number.

13441639 is a deficient number, since it is larger than the sum of its proper divisors (7385).

13441639 is an equidigital number, since it uses as much as digits as its factorization.

13441639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7384.

The product of its digits is 7776, while the sum is 31.

The square root of 13441639 is about 3666.2840861013. The cubic root of 13441639 is about 237.7665424876.

The spelling of 13441639 in words is "thirteen million, four hundred forty-one thousand, six hundred thirty-nine".