4002005487 has 8 divisors (see below), whose sum is σ = 5340325936. Its totient is φ = 2665844352.

The previous prime is 4002005477. The next prime is 4002005509. The reversal of 4002005487 is 7845002004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4002005487 - 2¹⁰ = 4002004463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002005407) 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 7 ways as a sum of consecutive naturals, for example, 535498 + ... + 542919.

It is an arithmetic number, because the mean of its divisors is an integer number (667540742).

Almost surely, 2^4002005487 is an apocalyptic number.

4002005487 is a deficient number, since it is larger than the sum of its proper divisors (1338320449).

4002005487 is a wasteful number, since it uses less digits than its factorization.

4002005487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079657.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 4002005487 is about 63261.4059834272. The cubic root of 4002005487 is about 1587.6663003249. Note that the first 3 decimals are identical.

The spelling of 4002005487 in words is "four billion, two million, five thousand, four hundred eighty-seven".