13440715 has 4 divisors (see below), whose sum is σ = 16128864. Its totient is φ = 10752568.

The previous prime is 13440709. The next prime is 13440751. The reversal of 13440715 is 51704431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13440715 - 2⁵ = 13440683 is a prime.

It is a super-2 number, since 2×13440715² = 361305639422450, which contains 22 as substring.

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 13440715.

It is an unprimeable number.

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, 1344067 + ... + 1344076.

It is an arithmetic number, because the mean of its divisors is an integer number (4032216).

Almost surely, 2^13440715 is an apocalyptic number.

13440715 is a deficient number, since it is larger than the sum of its proper divisors (2688149).

13440715 is an equidigital number, since it uses as much as digits as its factorization.

13440715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688148.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 13440715 is about 3666.1580707875. The cubic root of 13440715 is about 237.7610942106.

The spelling of 13440715 in words is "thirteen million, four hundred forty thousand, seven hundred fifteen".