3986715 has 8 divisors (see below), whose sum is σ = 6378768. Its totient is φ = 2126240.

The previous prime is 3986711. The next prime is 3986729. The reversal of 3986715 is 5176893.

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

It is not a de Polignac number, because 3986715 - 2² = 3986711 is a prime.

3986715 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3986711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132876 + ... + 132905.

It is an arithmetic number, because the mean of its divisors is an integer number (797346).

Almost surely, 2^3986715 is an apocalyptic number.

3986715 is a deficient number, since it is larger than the sum of its proper divisors (2392053).

3986715 is a wasteful number, since it uses less digits than its factorization.

3986715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265789.

The product of its digits is 45360, while the sum is 39.

The square root of 3986715 is about 1996.6759877356. The cubic root of 3986715 is about 158.5641717551.

The spelling of 3986715 in words is "three million, nine hundred eighty-six thousand, seven hundred fifteen".