3987887899 has 8 divisors (see below), whose sum is σ = 4020392880. Its totient is φ = 3955437696.

The previous prime is 3987887879. The next prime is 3987887947. The reversal of 3987887899 is 9987887893.

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-3987887899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987887809) 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, 139407 + ... + 165559.

It is an arithmetic number, because the mean of its divisors is an integer number (502549110).

Almost surely, 2^3987887899 is an apocalyptic number.

3987887899 is a deficient number, since it is larger than the sum of its proper divisors (32504981).

3987887899 is a wasteful number, since it uses less digits than its factorization.

3987887899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27389.

The product of its digits is 438939648, while the sum is 76.

The square root of 3987887899 is about 63149.7260405776. The cubic root of 3987887899 is about 1585.7972018887.

The spelling of 3987887899 in words is "three billion, nine hundred eighty-seven million, eight hundred eighty-seven thousand, eight hundred ninety-nine".