3868815 has 8 divisors (see below), whose sum is σ = 6190128. Its totient is φ = 2063360.

The previous prime is 3868811. The next prime is 3868817. The reversal of 3868815 is 5188683.

It is a happy number.

3868815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3868815 - 2² = 3868811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128946 + ... + 128975.

It is an arithmetic number, because the mean of its divisors is an integer number (773766).

Almost surely, 2^3868815 is an apocalyptic number.

3868815 is a deficient number, since it is larger than the sum of its proper divisors (2321313).

3868815 is a wasteful number, since it uses less digits than its factorization.

3868815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257929.

The product of its digits is 46080, while the sum is 39.

The square root of 3868815 is about 1966.9303495549. The cubic root of 3868815 is about 156.9854206376.

The spelling of 3868815 in words is "three million, eight hundred sixty-eight thousand, eight hundred fifteen".