13308985 has 4 divisors (see below), whose sum is σ = 15970788. Its totient is φ = 10647184.

The previous prime is 13308979. The next prime is 13308991. The reversal of 13308985 is 58980331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58980331 = 37 ⋅1594063.

It is an interprime number because it is at equal distance from previous prime (13308979) and next prime (13308991).

It can be written as a sum of positive squares in 2 ways, for example, as 8340544 + 4968441 = 2888^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 13308985 - 2¹⁵ = 13276217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1330894 + ... + 1330903.

It is an arithmetic number, because the mean of its divisors is an integer number (3992697).

Almost surely, 2^13308985 is an apocalyptic number.

It is an amenable number.

13308985 is a deficient number, since it is larger than the sum of its proper divisors (2661803).

13308985 is an equidigital number, since it uses as much as digits as its factorization.

13308985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661802.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13308985 is about 3648.1481603685. The cubic root of 13308985 is about 236.9817916424.

The spelling of 13308985 in words is "thirteen million, three hundred eight thousand, nine hundred eighty-five".