441042209 has 2 divisors, whose sum is σ = 441042210. Its totient is φ = 441042208.

The previous prime is 441042197. The next prime is 441042229. The reversal of 441042209 is 902240144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428283025 + 12759184 = 20695^2 + 3572^2 .

It is a cyclic number.

It is not a de Polignac number, because 441042209 - 2¹⁶ = 440976673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (441042229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220521104 + 220521105.

It is an arithmetic number, because the mean of its divisors is an integer number (220521105).

Almost surely, 2^441042209 is an apocalyptic number.

It is an amenable number.

441042209 is a deficient number, since it is larger than the sum of its proper divisors (1).

441042209 is an equidigital number, since it uses as much as digits as its factorization.

441042209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 441042209 is about 21001.0049521446. The cubic root of 441042209 is about 761.1905445803.

The spelling of 441042209 in words is "four hundred forty-one million, forty-two thousand, two hundred nine".