3858644 has 6 divisors (see below), whose sum is σ = 6752634. Its totient is φ = 1929320.

The previous prime is 3858629. The next prime is 3858667. The reversal of 3858644 is 4468583.

It is a happy number.

3858644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 1926544 = 1390^2 + 1388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3858598 and 3858607.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 482327 + ... + 482334.

It is an arithmetic number, because the mean of its divisors is an integer number (1125439).

Almost surely, 2^3858644 is an apocalyptic number.

It is an amenable number.

3858644 is a deficient number, since it is larger than the sum of its proper divisors (2893990).

3858644 is a wasteful number, since it uses less digits than its factorization.

3858644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964665 (or 964663 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 3858644 is about 1964.3431472123. The cubic root of 3858644 is about 156.8477298990.

The spelling of 3858644 in words is "three million, eight hundred fifty-eight thousand, six hundred forty-four".