13663389 has 8 divisors (see below), whose sum is σ = 18277312. Its totient is φ = 9079200.

The previous prime is 13663387. The next prime is 13663399. The reversal of 13663389 is 98336631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13663389 - 2¹ = 13663387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13663387) 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, 6337 + ... + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (2284664).

Almost surely, 2^13663389 is an apocalyptic number.

It is an amenable number.

13663389 is a deficient number, since it is larger than the sum of its proper divisors (4613923).

13663389 is a wasteful number, since it uses less digits than its factorization.

13663389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14867.

The product of its digits is 69984, while the sum is 39.

The square root of 13663389 is about 3696.4021696780. The cubic root of 13663389 is about 239.0669151989.

The spelling of 13663389 in words is "thirteen million, six hundred sixty-three thousand, three hundred eighty-nine".