8000442009 has 20 divisors (see below), whose sum is σ = 13658603904. Its totient is φ = 4571680824.

The previous prime is 8000442001. The next prime is 8000442011. The reversal of 8000442009 is 9002440008.

It is not a de Polignac number, because 8000442009 - 2³ = 8000442001 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8000442001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7054497 + ... + 7055630.

Almost surely, 2^8000442009 is an apocalyptic number.

It is an amenable number.

8000442009 is a deficient number, since it is larger than the sum of its proper divisors (5658161895).

8000442009 is a wasteful number, since it uses less digits than its factorization.

8000442009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14110146 (or 14110137 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8000442009 is about 89445.1899712891. The cubic root of 8000442009 is about 2000.0368334050.

The spelling of 8000442009 in words is "eight billion, four hundred forty-two thousand, nine".