3943850 has 12 divisors (see below), whose sum is σ = 7335654. Its totient is φ = 1577520.

The previous prime is 3943843. The next prime is 3943853. The reversal of 3943850 is 583493.

It can be written as a sum of positive squares in 3 ways, for example, as 2660161 + 1283689 = 1631^2 + 1133^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3943853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39389 + ... + 39488.

Almost surely, 2^3943850 is an apocalyptic number.

3943850 is a deficient number, since it is larger than the sum of its proper divisors (3391804).

3943850 is a wasteful number, since it uses less digits than its factorization.

3943850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78889 (or 78884 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 3943850 is about 1985.9128883211. The cubic root of 3943850 is about 157.9938308759.

The spelling of 3943850 in words is "three million, nine hundred forty-three thousand, eight hundred fifty".