13279609 has 4 divisors (see below), whose sum is σ = 15176704. Its totient is φ = 11382516.

The previous prime is 13279589. The next prime is 13279619. The reversal of 13279609 is 90697231.

13279609 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: 90697231 = 97 ⋅935023.

It is a cyclic number.

It is not a de Polignac number, because 13279609 - 2¹⁷ = 13148537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13279619) 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, 948537 + ... + 948550.

It is an arithmetic number, because the mean of its divisors is an integer number (3794176).

Almost surely, 2^13279609 is an apocalyptic number.

It is an amenable number.

13279609 is a deficient number, since it is larger than the sum of its proper divisors (1897095).

13279609 is an equidigital number, since it uses as much as digits as its factorization.

13279609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897094.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 13279609 is about 3644.1197839808. The cubic root of 13279609 is about 236.8073053752.

The spelling of 13279609 in words is "thirteen million, two hundred seventy-nine thousand, six hundred nine".