13668459 has 16 divisors (see below), whose sum is σ = 22053888. Its totient is φ = 7350912.

The previous prime is 13668443. The next prime is 13668481. The reversal of 13668459 is 95486631.

It is not a de Polignac number, because 13668459 - 2⁴ = 13668443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13668459.

It is not an unprimeable number, because it can be changed into a prime (13668419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18787 + ... + 19500.

It is an arithmetic number, because the mean of its divisors is an integer number (1378368).

Almost surely, 2^13668459 is an apocalyptic number.

13668459 is a deficient number, since it is larger than the sum of its proper divisors (8385429).

13668459 is a wasteful number, since it uses less digits than its factorization.

13668459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38314.

The product of its digits is 155520, while the sum is 42.

The square root of 13668459 is about 3697.0879080704. The cubic root of 13668459 is about 239.0964812988.

The spelling of 13668459 in words is "thirteen million, six hundred sixty-eight thousand, four hundred fifty-nine".