4049363221 has 2 divisors, whose sum is σ = 4049363222. Its totient is φ = 4049363220.

The previous prime is 4049363203. The next prime is 4049363257. The reversal of 4049363221 is 1223639404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3307400100 + 741963121 = 57510^2 + 27239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4049363221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4049363291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2024681610 + 2024681611.

It is an arithmetic number, because the mean of its divisors is an integer number (2024681611).

Almost surely, 2^4049363221 is an apocalyptic number.

It is an amenable number.

4049363221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4049363221 is an equidigital number, since it uses as much as digits as its factorization.

4049363221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 4049363221 is about 63634.6071017964. The cubic root of 4049363221 is about 1593.9043088198.

The spelling of 4049363221 in words is "four billion, forty-nine million, three hundred sixty-three thousand, two hundred twenty-one".