8894407009 has 2 divisors, whose sum is σ = 8894407010. Its totient is φ = 8894407008.

The previous prime is 8894407007. The next prime is 8894407019. The reversal of 8894407009 is 9007044988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8307411025 + 586995984 = 91145^2 + 24228^2 .

It is a cyclic number.

It is not a de Polignac number, because 8894407009 - 2¹ = 8894407007 is a prime.

It is a super-2 number, since 2×8894407009² (a number of 21 digits) contains 22 as substring.

Together with 8894407007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8894407001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4447203504 + 4447203505.

It is an arithmetic number, because the mean of its divisors is an integer number (4447203505).

Almost surely, 2^8894407009 is an apocalyptic number.

It is an amenable number.

8894407009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8894407009 is an equidigital number, since it uses as much as digits as its factorization.

8894407009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 8894407009 is about 94310.1638690125. The cubic root of 8894407009 is about 2071.9169006869.

The spelling of 8894407009 in words is "eight billion, eight hundred ninety-four million, four hundred seven thousand, nine".