13440441 has 16 divisors (see below), whose sum is σ = 21371904. Its totient is φ = 7346064.

The previous prime is 13440437. The next prime is 13440461. The reversal of 13440441 is 14404431.

It is not a de Polignac number, because 13440441 - 2² = 13440437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13440431) 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 15 ways as a sum of consecutive naturals, for example, 13431 + ... + 14396.

It is an arithmetic number, because the mean of its divisors is an integer number (1335744).

Almost surely, 2^13440441 is an apocalyptic number.

It is an amenable number.

13440441 is a deficient number, since it is larger than the sum of its proper divisors (7931463).

13440441 is a wasteful number, since it uses less digits than its factorization.

13440441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27860.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 13440441 is about 3666.1207017773. The cubic root of 13440441 is about 237.7594785479.

Adding to 13440441 its reverse (14404431), we get a palindrome (27844872).

The spelling of 13440441 in words is "thirteen million, four hundred forty thousand, four hundred forty-one".