3943893 has 8 divisors (see below), whose sum is σ = 5268256. Its totient is φ = 2624400.

The previous prime is 3943883. The next prime is 3943921. The reversal of 3943893 is 3983493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3943893 - 2⁶ = 3943829 is a prime.

It is a super-3 number, since 3×3943893³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943843) 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 in 7 ways as a sum of consecutive naturals, for example, 1623 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (658532).

Almost surely, 2^3943893 is an apocalyptic number.

It is an amenable number.

3943893 is a deficient number, since it is larger than the sum of its proper divisors (1324363).

3943893 is a wasteful number, since it uses less digits than its factorization.

3943893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435.

The product of its digits is 69984, while the sum is 39.

The square root of 3943893 is about 1985.9237145470. The cubic root of 3943893 is about 157.9944050788.

The spelling of 3943893 in words is "three million, nine hundred forty-three thousand, eight hundred ninety-three".