3864015 has 24 divisors (see below), whose sum is σ = 7093008. Its totient is φ = 1939200.

The previous prime is 3863987. The next prime is 3864019. The reversal of 3864015 is 5104683.

3864015 is a `hidden beast` number, since 3 + 8 + 640 + 15 = 666.

It is not a de Polignac number, because 3864015 - 2⁷ = 3863887 is a prime.

It is a super-2 number, since 2×3864015² = 29861223840450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3864015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1761 + ... + 3290.

It is an arithmetic number, because the mean of its divisors is an integer number (295542).

Almost surely, 2^3864015 is an apocalyptic number.

3864015 is a deficient number, since it is larger than the sum of its proper divisors (3228993).

3864015 is a wasteful number, since it uses less digits than its factorization.

3864015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 3864015 is about 1965.7097954683. The cubic root of 3864015 is about 156.9204703564.

Adding to 3864015 its reverse (5104683), we get a palindrome (8968698).

The spelling of 3864015 in words is "three million, eight hundred sixty-four thousand, fifteen".