13409489 has 4 divisors (see below), whose sum is σ = 13461924. Its totient is φ = 13357056.

The previous prime is 13409441. The next prime is 13409491. The reversal of 13409489 is 98490431.

13409489 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 an emirpimes, since its reverse is a distinct semiprime: 98490431 = 13 ⋅7576187.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 7333264 = 2465^2 + 2708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13409489 is a prime.

It is a super-2 number, since 2×13409489² = 359628790482242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13409089) 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, 25832 + ... + 26345.

It is an arithmetic number, because the mean of its divisors is an integer number (3365481).

Almost surely, 2^13409489 is an apocalyptic number.

It is an amenable number.

13409489 is a deficient number, since it is larger than the sum of its proper divisors (52435).

13409489 is an equidigital number, since it uses as much as digits as its factorization.

13409489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52434.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 13409489 is about 3661.8969128035. The cubic root of 13409489 is about 237.5768261153.

The spelling of 13409489 in words is "thirteen million, four hundred nine thousand, four hundred eighty-nine".