3220444243 has 4 divisors (see below), whose sum is σ = 3261209440. Its totient is φ = 3179679048.

The previous prime is 3220444231. The next prime is 3220444267. The reversal of 3220444243 is 3424440223.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3220444243 is a prime.

It is a super-2 number, since 2×3220444243² = 20742522244543686098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220444223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20382480 + ... + 20382637.

It is an arithmetic number, because the mean of its divisors is an integer number (815302360).

Almost surely, 2^3220444243 is an apocalyptic number.

3220444243 is a deficient number, since it is larger than the sum of its proper divisors (40765197).

3220444243 is an equidigital number, since it uses as much as digits as its factorization.

3220444243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40765196.

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 3220444243 is about 56748.9580785410. The cubic root of 3220444243 is about 1476.7441580325.

Adding to 3220444243 its reverse (3424440223), we get a palindrome (6644884466).

The spelling of 3220444243 in words is "three billion, two hundred twenty million, four hundred forty-four thousand, two hundred forty-three".