3943668 has 12 divisors (see below), whose sum is σ = 9201920. Its totient is φ = 1314552.

The previous prime is 3943663. The next prime is 3943673. The reversal of 3943668 is 8663493.

3943668 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3943663) and next prime (3943673).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×3943668³ (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 (3943661) 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, 164308 + ... + 164331.

Almost surely, 2^3943668 is an apocalyptic number.

It is an amenable number.

3943668 is an abundant number, since it is smaller than the sum of its proper divisors (5258252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3943668 is a wasteful number, since it uses less digits than its factorization.

3943668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328646 (or 328644 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 3943668 is about 1985.8670650373. The cubic root of 3943668 is about 157.9914004827.

The spelling of 3943668 in words is "three million, nine hundred forty-three thousand, six hundred sixty-eight".