13269409 has 4 divisors (see below), whose sum is σ = 13366404. Its totient is φ = 13172416.

The previous prime is 13269407. The next prime is 13269439. The reversal of 13269409 is 90496231.

13269409 = T₁₆₄ + T₁₆₅ + ... + T₄₃₇.

13269409 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: 90496231 = 7 ⋅12928033.

It can be written as a sum of positive squares in 2 ways, for example, as 4100625 + 9168784 = 2025^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 13269409 - 2¹ = 13269407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13269407) 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, 48292 + ... + 48565.

It is an arithmetic number, because the mean of its divisors is an integer number (3341601).

Almost surely, 2^13269409 is an apocalyptic number.

It is an amenable number.

13269409 is a deficient number, since it is larger than the sum of its proper divisors (96995).

13269409 is an equidigital number, since it uses as much as digits as its factorization.

13269409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96994.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13269409 is about 3642.7200002196. The cubic root of 13269409 is about 236.7466596838.

The spelling of 13269409 in words is "thirteen million, two hundred sixty-nine thousand, four hundred nine".