3864393 has 12 divisors (see below), whose sum is σ = 6011460. Its totient is φ = 2378016.

The previous prime is 3864349. The next prime is 3864403. The reversal of 3864393 is 3934683.

3864393 is a `hidden beast` number, since 3 + 8 + 643 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 166464 + 3697929 = 408^2 + 1923^2 .

It is not a de Polignac number, because 3864393 - 2⁸ = 3864137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16398 + ... + 16631.

It is an arithmetic number, because the mean of its divisors is an integer number (500955).

Almost surely, 2^3864393 is an apocalyptic number.

It is an amenable number.

3864393 is a deficient number, since it is larger than the sum of its proper divisors (2147067).

3864393 is a wasteful number, since it uses less digits than its factorization.

3864393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33048 (or 33045 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 3864393 is about 1965.8059415924. The cubic root of 3864393 is about 156.9255871416.

The spelling of 3864393 in words is "three million, eight hundred sixty-four thousand, three hundred ninety-three".