13158989 has 4 divisors (see below), whose sum is σ = 13465056. Its totient is φ = 12852924.

The previous prime is 13158979. The next prime is 13159019. The reversal of 13158989 is 98985131.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 98985131 = 7 ⋅14140733.

It is a cyclic number.

It is not a de Polignac number, because 13158989 - 2¹⁶ = 13093453 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 (13158979) 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 3 ways as a sum of consecutive naturals, for example, 152969 + ... + 153054.

It is an arithmetic number, because the mean of its divisors is an integer number (3366264).

Almost surely, 2^13158989 is an apocalyptic number.

It is an amenable number.

13158989 is a deficient number, since it is larger than the sum of its proper divisors (306067).

13158989 is an equidigital number, since it uses as much as digits as its factorization.

13158989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306066.

The product of its digits is 77760, while the sum is 44.

The square root of 13158989 is about 3627.5320811814. The cubic root of 13158989 is about 236.0881421696.

The spelling of 13158989 in words is "thirteen million, one hundred fifty-eight thousand, nine hundred eighty-nine".