220247449 has 16 divisors (see below), whose sum is σ = 239057280. Its totient is φ = 202227840.

The previous prime is 220247441. The next prime is 220247453. The reversal of 220247449 is 944742022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220247449 - 2³ = 220247441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220247441) 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 15 ways as a sum of consecutive naturals, for example, 129247 + ... + 130939.

It is an arithmetic number, because the mean of its divisors is an integer number (14941080).

Almost surely, 2^220247449 is an apocalyptic number.

It is an amenable number.

220247449 is a deficient number, since it is larger than the sum of its proper divisors (18809831).

220247449 is a wasteful number, since it uses less digits than its factorization.

220247449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 220247449 is about 14840.7361340332. The cubic root of 220247449 is about 603.9073226296.

The spelling of 220247449 in words is "two hundred twenty million, two hundred forty-seven thousand, four hundred forty-nine".