3987686586 has 32 divisors (see below), whose sum is σ = 8885036160. Its totient is φ = 1184670144.

The previous prime is 3987686569. The next prime is 3987686597. The reversal of 3987686586 is 6856867893.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 879190 + ... + 883713.

It is an arithmetic number, because the mean of its divisors is an integer number (277657380).

Almost surely, 2^3987686586 is an apocalyptic number.

3987686586 is an abundant number, since it is smaller than the sum of its proper divisors (4897349574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3987686586 is a wasteful number, since it uses less digits than its factorization.

3987686586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762950.

The product of its digits is 104509440, while the sum is 66.

The square root of 3987686586 is about 63148.1320863887. The cubic root of 3987686586 is about 1585.7705171730.

The spelling of 3987686586 in words is "three billion, nine hundred eighty-seven million, six hundred eighty-six thousand, five hundred eighty-six".