442997108009 has 2 divisors, whose sum is σ = 442997108010. Its totient is φ = 442997108008.

The previous prime is 442997107999. The next prime is 442997108017. The reversal of 442997108009 is 900801799244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426905424400 + 16091683609 = 653380^2 + 126853^2 .

It is a cyclic number.

It is not a de Polignac number, because 442997108009 - 2¹⁶ = 442997042473 is a prime.

It is a super-2 number, since 2×442997108009² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442997108039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221498554004 + 221498554005.

It is an arithmetic number, because the mean of its divisors is an integer number (221498554005).

Almost surely, 2^442997108009 is an apocalyptic number.

It is an amenable number.

442997108009 is a deficient number, since it is larger than the sum of its proper divisors (1).

442997108009 is an equidigital number, since it uses as much as digits as its factorization.

442997108009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 442997108009 in words is "four hundred forty-two billion, nine hundred ninety-seven million, one hundred eight thousand, nine".