13306989 has 4 divisors (see below), whose sum is σ = 17742656. Its totient is φ = 8871324.

The previous prime is 13306981. The next prime is 13306991. The reversal of 13306989 is 98960331.

13306989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 98960331 = 3 ⋅32986777.

It is not a de Polignac number, because 13306989 - 2³ = 13306981 is a prime.

It is a super-2 number, since 2×13306989² = 354151912492242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13306981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217829 + ... + 2217834.

It is an arithmetic number, because the mean of its divisors is an integer number (4435664).

Almost surely, 2^13306989 is an apocalyptic number.

It is an amenable number.

13306989 is a deficient number, since it is larger than the sum of its proper divisors (4435667).

13306989 is an equidigital number, since it uses as much as digits as its factorization.

13306989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435666.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 13306989 is about 3647.8745866600. The cubic root of 13306989 is about 236.9699440245.

The spelling of 13306989 in words is "thirteen million, three hundred six thousand, nine hundred eighty-nine".