3865424 has 10 divisors (see below), whose sum is σ = 7489290. Its totient is φ = 1932704.

The previous prime is 3865363. The next prime is 3865429. The reversal of 3865424 is 4245683.

It can be written as a sum of positive squares in only one way, i.e., 3125824 + 739600 = 1768^2 + 860^2 .

It is a d-powerful number, because it can be written as 3⁹ + 8 + 6⁸ + 5⁹ + 4⁷ + 2¹⁷ + 4⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865429) 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 as a sum of consecutive naturals, namely, 120779 + ... + 120810.

It is an arithmetic number, because the mean of its divisors is an integer number (748929).

Almost surely, 2^3865424 is an apocalyptic number.

It is an amenable number.

3865424 is a deficient number, since it is larger than the sum of its proper divisors (3623866).

3865424 is a wasteful number, since it uses less digits than its factorization.

3865424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241597 (or 241591 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 3865424 is about 1966.0681575164. The cubic root of 3865424 is about 156.9395415448.

The spelling of 3865424 in words is "three million, eight hundred sixty-five thousand, four hundred twenty-four".