220446449 has 2 divisors, whose sum is σ = 220446450. Its totient is φ = 220446448.

The previous prime is 220446439. The next prime is 220446491. The reversal of 220446449 is 944644022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120846049 + 99600400 = 10993^2 + 9980^2 .

It is a cyclic number.

It is not a de Polignac number, because 220446449 - 2⁴ = 220446433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220446439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110223224 + 110223225.

It is an arithmetic number, because the mean of its divisors is an integer number (110223225).

Almost surely, 2^220446449 is an apocalyptic number.

It is an amenable number.

220446449 is a deficient number, since it is larger than the sum of its proper divisors (1).

220446449 is an equidigital number, since it uses as much as digits as its factorization.

220446449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 220446449 is about 14847.4391394611. The cubic root of 220446449 is about 604.0891505104.

The spelling of 220446449 in words is "two hundred twenty million, four hundred forty-six thousand, four hundred forty-nine".