13440817 has 8 divisors (see below), whose sum is σ = 14565824. Its totient is φ = 12328848.

The previous prime is 13440781. The next prime is 13440821. The reversal of 13440817 is 71804431.

13440817 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 13440817 - 2¹⁹ = 12916529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13440857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053 + ... + 5290.

It is an arithmetic number, because the mean of its divisors is an integer number (1820728).

Almost surely, 2^13440817 is an apocalyptic number.

It is an amenable number.

13440817 is a deficient number, since it is larger than the sum of its proper divisors (1125007).

13440817 is a wasteful number, since it uses less digits than its factorization.

13440817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 13440817 is about 3666.1719817815. The cubic root of 13440817 is about 237.7616956560.

The spelling of 13440817 in words is "thirteen million, four hundred forty thousand, eight hundred seventeen".