3879864 has 24 divisors (see below), whose sum is σ = 10508160. Its totient is φ = 1293264.

The previous prime is 3879853. The next prime is 3879913. The reversal of 3879864 is 4689783.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an Ulam number.

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 5 ways as a sum of consecutive naturals, for example, 26872 + ... + 27015.

It is an arithmetic number, because the mean of its divisors is an integer number (437840).

Almost surely, 2^3879864 is an apocalyptic number.

It is an amenable number.

3879864 is an abundant number, since it is smaller than the sum of its proper divisors (6628296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3879864 is a wasteful number, since it uses less digits than its factorization.

3879864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53899 (or 53892 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3879864 is about 1969.7370382871. The cubic root of 3879864 is about 157.1347241757.

The spelling of 3879864 in words is "three million, eight hundred seventy-nine thousand, eight hundred sixty-four".