3994668 has 36 divisors (see below), whose sum is σ = 10374000. Its totient is φ = 1295136.

The previous prime is 3994621. The next prime is 3994681. The reversal of 3994668 is 8664993.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168 + ... + 2831.

Almost surely, 2^3994668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5187000).

3994668 is an abundant number, since it is smaller than the sum of its proper divisors (6379332).

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

3994668 is a wasteful number, since it uses less digits than its factorization.

3994668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3041 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 3994668 is about 1998.6665554814. Note that the first 3 decimals coincide. The cubic root of 3994668 is about 158.6695403131.

The spelling of 3994668 in words is "three million, nine hundred ninety-four thousand, six hundred sixty-eight".