13224709 has 4 divisors (see below), whose sum is σ = 13247104. Its totient is φ = 13202316.

The previous prime is 13224697. The next prime is 13224713. The reversal of 13224709 is 90742231.

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: 90742231 = 193 ⋅470167.

It is a cyclic number.

It is not a de Polignac number, because 13224709 - 2⁵ = 13224677 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 (13224749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10287 + ... + 11500.

It is an arithmetic number, because the mean of its divisors is an integer number (3311776).

Almost surely, 2^13224709 is an apocalyptic number.

It is an amenable number.

13224709 is a deficient number, since it is larger than the sum of its proper divisors (22395).

13224709 is an equidigital number, since it uses as much as digits as its factorization.

13224709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22394.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 13224709 is about 3636.5792992866. The cubic root of 13224709 is about 236.4805217075.

The spelling of 13224709 in words is "thirteen million, two hundred twenty-four thousand, seven hundred nine".