3986215 has 8 divisors (see below), whose sum is σ = 4833360. Its totient is φ = 3155712.

The previous prime is 3986209. The next prime is 3986231. The reversal of 3986215 is 5126893.

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 3986215 - 2³ = 3986207 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 3625 + ... + 4594.

It is an arithmetic number, because the mean of its divisors is an integer number (604170).

Almost surely, 2^3986215 is an apocalyptic number.

3986215 is a deficient number, since it is larger than the sum of its proper divisors (847145).

3986215 is an equidigital number, since it uses as much as digits as its factorization.

3986215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321.

The product of its digits is 12960, while the sum is 34.

The square root of 3986215 is about 1996.5507757130. The cubic root of 3986215 is about 158.5575426213.

The spelling of 3986215 in words is "three million, nine hundred eighty-six thousand, two hundred fifteen".