13440041 has 2 divisors, whose sum is σ = 13440042. Its totient is φ = 13440040.

The previous prime is 13440001. The next prime is 13440043. The reversal of 13440041 is 14004431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 270400 = 3629^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440041 - 2¹⁰ = 13439017 is a prime.

It is a Sophie Germain prime.

Together with 13440043, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13440043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720020 + 6720021.

It is an arithmetic number, because the mean of its divisors is an integer number (6720021).

Almost surely, 2^13440041 is an apocalyptic number.

It is an amenable number.

13440041 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440041 is an equidigital number, since it uses as much as digits as its factorization.

13440041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13440041 is about 3666.0661477938. The cubic root of 13440041 is about 237.7571198769.

Adding to 13440041 its reverse (14004431), we get a palindrome (27444472).

The spelling of 13440041 in words is "thirteen million, four hundred forty thousand, forty-one".