3987887893 has 8 divisors (see below), whose sum is σ = 4351460256. Its totient is φ = 3624488400.

The previous prime is 3987887879. The next prime is 3987887947.

3987887893 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3987887893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987882893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7630 + ... + 89632.

It is an arithmetic number, because the mean of its divisors is an integer number (543932532).

Almost surely, 2^3987887893 is an apocalyptic number.

It is an amenable number.

3987887893 is a deficient number, since it is larger than the sum of its proper divisors (363572363).

3987887893 is a wasteful number, since it uses less digits than its factorization.

3987887893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86435.

The product of its digits is 146313216, while the sum is 70.

The square root of 3987887893 is about 63149.7259930714. The cubic root of 3987887893 is about 1585.7972010933.

The spelling of 3987887893 in words is "three billion, nine hundred eighty-seven million, eight hundred eighty-seven thousand, eight hundred ninety-three".