4336640221 has 2 divisors, whose sum is σ = 4336640222. Its totient is φ = 4336640220.

The previous prime is 4336640197. The next prime is 4336640261. The reversal of 4336640221 is 1220466334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4174968996 + 161671225 = 64614^2 + 12715^2 .

It is a cyclic number.

It is not a de Polignac number, because 4336640221 - 2⁹ = 4336639709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4336640261) 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, 2168320110 + 2168320111.

It is an arithmetic number, because the mean of its divisors is an integer number (2168320111).

Almost surely, 2^4336640221 is an apocalyptic number.

It is an amenable number.

4336640221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4336640221 is an equidigital number, since it uses as much as digits as its factorization.

4336640221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 4336640221 is about 65853.1716851968. The cubic root of 4336640221 is about 1630.7390254157.

The spelling of 4336640221 in words is "four billion, three hundred thirty-six million, six hundred forty thousand, two hundred twenty-one".