3943365 has 16 divisors (see below), whose sum is σ = 6354816. Its totient is φ = 2088000.

The previous prime is 3943319. The next prime is 3943367. The reversal of 3943365 is 5633493.

It is not a de Polignac number, because 3943365 - 2⁶ = 3943301 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395 + ... + 3135.

It is an arithmetic number, because the mean of its divisors is an integer number (397176).

Almost surely, 2^3943365 is an apocalyptic number.

It is an amenable number.

3943365 is a deficient number, since it is larger than the sum of its proper divisors (2411451).

3943365 is a wasteful number, since it uses less digits than its factorization.

3943365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900.

The product of its digits is 29160, while the sum is 33.

The square root of 3943365 is about 1985.7907744775. The cubic root of 3943365 is about 157.9873541126.

The spelling of 3943365 in words is "three million, nine hundred forty-three thousand, three hundred sixty-five".