3887915 has 4 divisors (see below), whose sum is σ = 4665504. Its totient is φ = 3110328.

The previous prime is 3887911. The next prime is 3887959. The reversal of 3887915 is 5197883.

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 3887915 - 2² = 3887911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3887911) 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, 388787 + ... + 388796.

It is an arithmetic number, because the mean of its divisors is an integer number (1166376).

Almost surely, 2^3887915 is an apocalyptic number.

3887915 is a deficient number, since it is larger than the sum of its proper divisors (777589).

3887915 is an equidigital number, since it uses as much as digits as its factorization.

3887915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777588.

The product of its digits is 60480, while the sum is 41.

The square root of 3887915 is about 1971.7796530039. The cubic root of 3887915 is about 157.2433377439.

The spelling of 3887915 in words is "three million, eight hundred eighty-seven thousand, nine hundred fifteen".