13450209 has 4 divisors (see below), whose sum is σ = 17933616. Its totient is φ = 8966804.

The previous prime is 13450207. The next prime is 13450219. The reversal of 13450209 is 90205431.

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: 90205431 = 3 ⋅30068477.

It is a cyclic number.

It is not a de Polignac number, because 13450209 - 2¹ = 13450207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13450201) 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, 2241699 + ... + 2241704.

It is an arithmetic number, because the mean of its divisors is an integer number (4483404).

Almost surely, 2^13450209 is an apocalyptic number.

It is an amenable number.

13450209 is a deficient number, since it is larger than the sum of its proper divisors (4483407).

13450209 is an equidigital number, since it uses as much as digits as its factorization.

13450209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483406.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13450209 is about 3667.4526581812. The cubic root of 13450209 is about 237.8170627744.

The spelling of 13450209 in words is "thirteen million, four hundred fifty thousand, two hundred nine".