13270909 has 4 divisors (see below), whose sum is σ = 13278304. Its totient is φ = 13263516.

The previous prime is 13270903. The next prime is 13270963. The reversal of 13270909 is 90907231.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13270909 - 2⁷ = 13270781 is a prime.

It is a super-2 number, since 2×13270909² = 352234051372562, 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 (13270903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904 + ... + 5230.

It is an arithmetic number, because the mean of its divisors is an integer number (3319576).

Almost surely, 2^13270909 is an apocalyptic number.

It is an amenable number.

13270909 is a deficient number, since it is larger than the sum of its proper divisors (7395).

13270909 is an equidigital number, since it uses as much as digits as its factorization.

13270909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7394.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 13270909 is about 3642.9258845055. The cubic root of 13270909 is about 236.7555801165.

The spelling of 13270909 in words is "thirteen million, two hundred seventy thousand, nine hundred nine".