13440413 has 8 divisors (see below), whose sum is σ = 15385728. Its totient is φ = 11501424.

The previous prime is 13440409. The next prime is 13440419. The reversal of 13440413 is 31404431.

It is a happy number.

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 13440413 - 2² = 13440409 is a prime.

It is a super-2 number, since 2×13440413² = 361289403221138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440419) 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, 4595 + ... + 6927.

It is an arithmetic number, because the mean of its divisors is an integer number (1923216).

Almost surely, 2^13440413 is an apocalyptic number.

It is an amenable number.

13440413 is a deficient number, since it is larger than the sum of its proper divisors (1945315).

13440413 is an equidigital number, since it uses as much as digits as its factorization.

13440413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 13440413 is about 3666.1168830249. The cubic root of 13440413 is about 237.7593134425.

Adding to 13440413 its reverse (31404431), we get a palindrome (44844844).

The spelling of 13440413 in words is "thirteen million, four hundred forty thousand, four hundred thirteen".