3886915 has 4 divisors (see below), whose sum is σ = 4664304. Its totient is φ = 3109528.

The previous prime is 3886889. The next prime is 3886919. The reversal of 3886915 is 5196883.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3886915 - 2⁷ = 3886787 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3886919) 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 3 ways as a sum of consecutive naturals, for example, 388687 + ... + 388696.

It is an arithmetic number, because the mean of its divisors is an integer number (1166076).

Almost surely, 2^3886915 is an apocalyptic number.

3886915 is a deficient number, since it is larger than the sum of its proper divisors (777389).

3886915 is an equidigital number, since it uses as much as digits as its factorization.

3886915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777388.

The product of its digits is 51840, while the sum is 40.

The square root of 3886915 is about 1971.5260586662. The cubic root of 3886915 is about 157.2298552114.

The spelling of 3886915 in words is "three million, eight hundred eighty-six thousand, nine hundred fifteen".