4043220949 has 2 divisors, whose sum is σ = 4043220950. Its totient is φ = 4043220948.

The previous prime is 4043220947. The next prime is 4043220967. The reversal of 4043220949 is 9490223404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3787540849 + 255680100 = 61543^2 + 15990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043220949 - 2¹ = 4043220947 is a prime.

Together with 4043220947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4043220941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021610474 + 2021610475.

It is an arithmetic number, because the mean of its divisors is an integer number (2021610475).

Almost surely, 2^4043220949 is an apocalyptic number.

It is an amenable number.

4043220949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043220949 is an equidigital number, since it uses as much as digits as its factorization.

4043220949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 4043220949 is about 63586.3267456141. The cubic root of 4043220949 is about 1593.0979970180.

The spelling of 4043220949 in words is "four billion, forty-three million, two hundred twenty thousand, nine hundred forty-nine".