3840943 has 4 divisors (see below), whose sum is σ = 3852360. Its totient is φ = 3829528.

The previous prime is 3840923. The next prime is 3840953. The reversal of 3840943 is 3490483.

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 3840943 - 2⁵ = 3840911 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5188 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (963090).

Almost surely, 2^3840943 is an apocalyptic number.

3840943 is a deficient number, since it is larger than the sum of its proper divisors (11417).

3840943 is a wasteful number, since it uses less digits than its factorization.

3840943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 3840943 is about 1959.8323907926. The cubic root of 3840943 is about 156.6075230705.

The spelling of 3840943 in words is "three million, eight hundred forty thousand, nine hundred forty-three".