442204304309 has 2 divisors, whose sum is σ = 442204304310. Its totient is φ = 442204304308.

The previous prime is 442204304303. The next prime is 442204304357. The reversal of 442204304309 is 903403402244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441822101809 + 382202500 = 664697^2 + 19550^2 .

It is a cyclic number.

It is not a de Polignac number, because 442204304309 - 2⁸ = 442204304053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442204304303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221102152154 + 221102152155.

It is an arithmetic number, because the mean of its divisors is an integer number (221102152155).

Almost surely, 2^442204304309 is an apocalyptic number.

It is an amenable number.

442204304309 is a deficient number, since it is larger than the sum of its proper divisors (1).

442204304309 is an equidigital number, since it uses as much as digits as its factorization.

442204304309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 442204304309 in words is "four hundred forty-two billion, two hundred four million, three hundred four thousand, three hundred nine".