3923943 has 4 divisors (see below), whose sum is σ = 5231928. Its totient is φ = 2615960.

The previous prime is 3923917. The next prime is 3923963. The reversal of 3923943 is 3493293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3493293 = 3 ⋅1164431.

It is a cyclic number.

It is not a de Polignac number, because 3923943 - 2⁵ = 3923911 is a prime.

It is a D-number.

3923943 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3923963) 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, 653988 + ... + 653993.

It is an arithmetic number, because the mean of its divisors is an integer number (1307982).

Almost surely, 2^3923943 is an apocalyptic number.

3923943 is a deficient number, since it is larger than the sum of its proper divisors (1307985).

3923943 is a wasteful number, since it uses less digits than its factorization.

3923943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307984.

The product of its digits is 17496, while the sum is 33.

The square root of 3923943 is about 1980.8944949189. The cubic root of 3923943 is about 157.7275521582.

The spelling of 3923943 in words is "three million, nine hundred twenty-three thousand, nine hundred forty-three".