8001045987 has 24 divisors (see below), whose sum is σ = 11975566848. Its totient is φ = 4745935920.

The previous prime is 8001045959. The next prime is 8001046007. The reversal of 8001045987 is 7895401008.

It is not a de Polignac number, because 8001045987 - 2²⁷ = 7866828259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8001045947) 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 23 ways as a sum of consecutive naturals, for example, 217423 + ... + 251544.

It is an arithmetic number, because the mean of its divisors is an integer number (498981952).

Almost surely, 2^8001045987 is an apocalyptic number.

8001045987 is a deficient number, since it is larger than the sum of its proper divisors (3974520861).

8001045987 is a wasteful number, since it uses less digits than its factorization.

8001045987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469039 (or 469028 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 8001045987 is about 89448.5661539636. The cubic root of 8001045987 is about 2000.0871617847.

The spelling of 8001045987 in words is "eight billion, one million, forty-five thousand, nine hundred eighty-seven".