13108989 has 16 divisors (see below), whose sum is σ = 19009728. Its totient is φ = 8001792.

The previous prime is 13108987. The next prime is 13109003. The reversal of 13108989 is 98980131.

It is a happy number.

13108989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13108989 - 2¹ = 13108987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13108981) 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, 1587 + ... + 5360.

It is an arithmetic number, because the mean of its divisors is an integer number (1188108).

Almost surely, 2^13108989 is an apocalyptic number.

It is an amenable number.

13108989 is a deficient number, since it is larger than the sum of its proper divisors (5900739).

13108989 is a wasteful number, since it uses less digits than its factorization.

13108989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 13108989 is about 3620.6337842980. The cubic root of 13108989 is about 235.7887425284.

The spelling of 13108989 in words is "thirteen million, one hundred eight thousand, nine hundred eighty-nine".