3994408 has 32 divisors (see below), whose sum is σ = 8604000. Its totient is φ = 1719360.

The previous prime is 3994391. The next prime is 3994411. The reversal of 3994408 is 8044993.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478 + ... + 2866.

It is an arithmetic number, because the mean of its divisors is an integer number (268875).

Almost surely, 2^3994408 is an apocalyptic number.

3994408 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4302000).

3994408 is an abundant number, since it is smaller than the sum of its proper divisors (4609592).

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

3994408 is a wasteful number, since it uses less digits than its factorization.

3994408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3994408 is about 1998.6015110572. The cubic root of 3994408 is about 158.6660978096. Note that the first 3 decimals are identical.

The spelling of 3994408 in words is "three million, nine hundred ninety-four thousand, four hundred eight".