3864431 has 4 divisors (see below), whose sum is σ = 3886200. Its totient is φ = 3842664.

The previous prime is 3864409. The next prime is 3864433. The reversal of 3864431 is 1344683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3864431 - 2¹⁰ = 3863407 is a prime.

It is a super-2 number, since 2×3864431² = 29867653907522, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁷ + 8⁷ + 6⁸ + 4⁴ + 4⁸ + 3⁹ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3864394 and 3864403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10616 + ... + 10973.

It is an arithmetic number, because the mean of its divisors is an integer number (971550).

Almost surely, 2^3864431 is an apocalyptic number.

3864431 is a deficient number, since it is larger than the sum of its proper divisors (21769).

3864431 is a wasteful number, since it uses less digits than its factorization.

3864431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21768.

The product of its digits is 6912, while the sum is 29.

The square root of 3864431 is about 1965.8156068157. The cubic root of 3864431 is about 156.9261015089.

The spelling of 3864431 in words is "three million, eight hundred sixty-four thousand, four hundred thirty-one".