13065989 has 4 divisors (see below), whose sum is σ = 13073856. Its totient is φ = 13058124.

The previous prime is 13065971. The next prime is 13065991. The reversal of 13065989 is 98956031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98956031 = 17 ⋅5820943.

It is a cyclic number.

It is not a de Polignac number, because 13065989 - 2⁸ = 13065733 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 (13065919) 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 3 ways as a sum of consecutive naturals, for example, 359 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (3268464).

Almost surely, 2^13065989 is an apocalyptic number.

It is an amenable number.

13065989 is a deficient number, since it is larger than the sum of its proper divisors (7867).

13065989 is an equidigital number, since it uses as much as digits as its factorization.

13065989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7866.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 13065989 is about 3614.6907198265. The cubic root of 13065989 is about 235.5306493467.

The spelling of 13065989 in words is "thirteen million, sixty-five thousand, nine hundred eighty-nine".