13471709 has 4 divisors (see below), whose sum is σ = 13491420. Its totient is φ = 13452000.

The previous prime is 13471693. The next prime is 13471727. The reversal of 13471709 is 90717431.

13471709 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1932100 + 11539609 = 1390^2 + 3397^2 .

It is a cyclic number.

It is not a de Polignac number, because 13471709 - 2⁴ = 13471693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13471729) 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, 8792 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (3372855).

Almost surely, 2^13471709 is an apocalyptic number.

It is an amenable number.

13471709 is a deficient number, since it is larger than the sum of its proper divisors (19711).

13471709 is an equidigital number, since it uses as much as digits as its factorization.

13471709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 13471709 is about 3670.3826775964. The cubic root of 13471709 is about 237.9437112370.

The spelling of 13471709 in words is "thirteen million, four hundred seventy-one thousand, seven hundred nine".