13381989 has 8 divisors (see below), whose sum is σ = 17890080. Its totient is φ = 8897616.

The previous prime is 13381939. The next prime is 13381993. The reversal of 13381989 is 98918331.

It is a happy number.

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

It is not a de Polignac number, because 13381989 - 2⁹ = 13381477 is a prime.

It is a super-2 number, since 2×13381989² = 358155259192242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13381989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13381919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4567 + ... + 6900.

It is an arithmetic number, because the mean of its divisors is an integer number (2236260).

Almost surely, 2^13381989 is an apocalyptic number.

It is an amenable number.

13381989 is a deficient number, since it is larger than the sum of its proper divisors (4508091).

13381989 is a wasteful number, since it uses less digits than its factorization.

13381989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11859.

The product of its digits is 46656, while the sum is 42.

The square root of 13381989 is about 3658.1401011990. The cubic root of 13381989 is about 237.4143085132.

The spelling of 13381989 in words is "thirteen million, three hundred eighty-one thousand, nine hundred eighty-nine".