13461209 has 4 divisors (see below), whose sum is σ = 13559604. Its totient is φ = 13362816.

The previous prime is 13461199. The next prime is 13461221. The reversal of 13461209 is 90216431.

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 4963984 + 8497225 = 2228^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 13461209 - 2¹⁶ = 13395673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13461289) 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, 48992 + ... + 49265.

It is an arithmetic number, because the mean of its divisors is an integer number (3389901).

Almost surely, 2^13461209 is an apocalyptic number.

It is an amenable number.

13461209 is a deficient number, since it is larger than the sum of its proper divisors (98395).

13461209 is an equidigital number, since it uses as much as digits as its factorization.

13461209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98394.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13461209 is about 3668.9520302124. The cubic root of 13461209 is about 237.8818765100.

The spelling of 13461209 in words is "thirteen million, four hundred sixty-one thousand, two hundred nine".