11720449 has 16 divisors (see below), whose sum is σ = 13189120. Its totient is φ = 10342080.

The previous prime is 11720447. The next prime is 11720483. The reversal of 11720449 is 94402711.

It is a cyclic number.

It is not a de Polignac number, because 11720449 - 2¹ = 11720447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11720447) 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 15 ways as a sum of consecutive naturals, for example, 51067 + ... + 51295.

It is an arithmetic number, because the mean of its divisors is an integer number (824320).

Almost surely, 2^11720449 is an apocalyptic number.

It is an amenable number.

11720449 is a deficient number, since it is larger than the sum of its proper divisors (1468671).

11720449 is a wasteful number, since it uses less digits than its factorization.

11720449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 11720449 is about 3423.5141302469. The cubic root of 11720449 is about 227.1510505972.

The spelling of 11720449 in words is "eleven million, seven hundred twenty thousand, four hundred forty-nine".