13440412 has 6 divisors (see below), whose sum is σ = 23520728. Its totient is φ = 6720204.

The previous prime is 13440409. The next prime is 13440419. The reversal of 13440412 is 21404431.

13440412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13440412.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 1680048 + ... + 1680055.

Almost surely, 2^13440412 is an apocalyptic number.

It is an amenable number.

13440412 is a deficient number, since it is larger than the sum of its proper divisors (10080316).

13440412 is a wasteful number, since it uses less digits than its factorization.

13440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360107 (or 3360105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 13440412 is about 3666.1167466408. The cubic root of 13440412 is about 237.7593075459.

Adding to 13440412 its reverse (21404431), we get a palindrome (34844843).

The spelling of 13440412 in words is "thirteen million, four hundred forty thousand, four hundred twelve".