3943938933 has 24 divisors (see below), whose sum is σ = 6218087616. Its totient is φ = 2388960000.

The previous prime is 3943938931. The next prime is 3943938949. The reversal of 3943938933 is 3398393493.

It is a happy number.

It is not a de Polignac number, because 3943938933 - 2¹ = 3943938931 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3943938933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943938931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189808 + ... + 209558.

It is an arithmetic number, because the mean of its divisors is an integer number (259086984).

Almost surely, 2^3943938933 is an apocalyptic number.

3943938933 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3943938933 is a deficient number, since it is larger than the sum of its proper divisors (2274148683).

3943938933 is a wasteful number, since it uses less digits than its factorization.

3943938933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21785 (or 21782 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 54.

The square root of 3943938933 is about 62800.7876781812. The cubic root of 3943938933 is about 1579.9501844306.

The spelling of 3943938933 in words is "three billion, nine hundred forty-three million, nine hundred thirty-eight thousand, nine hundred thirty-three".