204440641 has 2 divisors, whose sum is σ = 204440642. Its totient is φ = 204440640.

The previous prime is 204440611. The next prime is 204440671. The reversal of 204440641 is 146044402.

It is a balanced prime because it is at equal distance from previous prime (204440611) and next prime (204440671).

It can be written as a sum of positive squares in only one way, i.e., 204375616 + 65025 = 14296^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 204440641 - 2¹¹ = 204438593 is a prime.

It is not a weakly prime, because it can be changed into another prime (204440611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102220320 + 102220321.

It is an arithmetic number, because the mean of its divisors is an integer number (102220321).

Almost surely, 2^204440641 is an apocalyptic number.

It is an amenable number.

204440641 is a deficient number, since it is larger than the sum of its proper divisors (1).

204440641 is an equidigital number, since it uses as much as digits as its factorization.

204440641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 204440641 is about 14298.2740566825. The cubic root of 204440641 is about 589.1000749474.

The spelling of 204440641 in words is "two hundred four million, four hundred forty thousand, six hundred forty-one".