442434322009 has 2 divisors, whose sum is σ = 442434322010. Its totient is φ = 442434322008.

The previous prime is 442434321991. The next prime is 442434322061. The reversal of 442434322009 is 900223434244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425719710784 + 16714611225 = 652472^2 + 129285^2 .

It is a cyclic number.

It is not a de Polignac number, because 442434322009 - 2⁵ = 442434321977 is a prime.

It is not a weakly prime, because it can be changed into another prime (442434322709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221217161004 + 221217161005.

It is an arithmetic number, because the mean of its divisors is an integer number (221217161005).

Almost surely, 2^442434322009 is an apocalyptic number.

It is an amenable number.

442434322009 is a deficient number, since it is larger than the sum of its proper divisors (1).

442434322009 is an equidigital number, since it uses as much as digits as its factorization.

442434322009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 442434322009 in words is "four hundred forty-two billion, four hundred thirty-four million, three hundred twenty-two thousand, nine".