3986715387 has 8 divisors (see below), whose sum is σ = 5345317440. Its totient is φ = 2642961800.

The previous prime is 3986715379. The next prime is 3986715433. The reversal of 3986715387 is 7835176893.

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

It is a cyclic number.

It is not a de Polignac number, because 3986715387 - 2³ = 3986715379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3986715587) 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, 3711489 + ... + 3712562.

It is an arithmetic number, because the mean of its divisors is an integer number (668164680).

Almost surely, 2^3986715387 is an apocalyptic number.

3986715387 is a deficient number, since it is larger than the sum of its proper divisors (1358602053).

3986715387 is a wasteful number, since it uses less digits than its factorization.

3986715387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7424233.

The product of its digits is 7620480, while the sum is 57.

The square root of 3986715387 is about 63140.4417707067. The cubic root of 3986715387 is about 1585.6417688579.

The spelling of 3986715387 in words is "three billion, nine hundred eighty-six million, seven hundred fifteen thousand, three hundred eighty-seven".