13449217 has 4 divisors (see below), whose sum is σ = 13487040. Its totient is φ = 13411396.

The previous prime is 13449211. The next prime is 13449221. The reversal of 13449217 is 71294431.

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: 71294431 = 13 ⋅5484187.

It is a cyclic number.

It is not a de Polignac number, because 13449217 - 2³ = 13449209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13449211) 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, 18373 + ... + 19090.

It is an arithmetic number, because the mean of its divisors is an integer number (3371760).

Almost surely, 2^13449217 is an apocalyptic number.

It is an amenable number.

13449217 is a deficient number, since it is larger than the sum of its proper divisors (37823).

13449217 is an equidigital number, since it uses as much as digits as its factorization.

13449217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37822.

The product of its digits is 6048, while the sum is 31.

The square root of 13449217 is about 3667.3174119511. The cubic root of 13449217 is about 237.8112160170.

The spelling of 13449217 in words is "thirteen million, four hundred forty-nine thousand, two hundred seventeen".