11220449 has 4 divisors (see below), whose sum is σ = 11362560. Its totient is φ = 11078340.

The previous prime is 11220427. The next prime is 11220457. The reversal of 11220449 is 94402211.

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.

It is a cyclic number.

It is not a de Polignac number, because 11220449 - 2⁸ = 11220193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70937 + ... + 71094.

It is an arithmetic number, because the mean of its divisors is an integer number (2840640).

Almost surely, 2^11220449 is an apocalyptic number.

It is an amenable number.

11220449 is a deficient number, since it is larger than the sum of its proper divisors (142111).

11220449 is an equidigital number, since it uses as much as digits as its factorization.

11220449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142110.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 11220449 is about 3349.6938666093. The cubic root of 11220449 is about 223.8738727132.

The spelling of 11220449 in words is "eleven million, two hundred twenty thousand, four hundred forty-nine".