3994994 has 8 divisors (see below), whose sum is σ = 6006000. Its totient is φ = 1992996.

The previous prime is 3994993. The next prime is 3995021. The reversal of 3994994 is 4994993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3994993) 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, 1004 + ... + 2999.

It is an arithmetic number, because the mean of its divisors is an integer number (750750).

Almost surely, 2^3994994 is an apocalyptic number.

3994994 is a deficient number, since it is larger than the sum of its proper divisors (2011006).

3994994 is a wasteful number, since it uses less digits than its factorization.

3994994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504.

The product of its digits is 314928, while the sum is 47.

The square root of 3994994 is about 1998.7481081917. The cubic root of 3994994 is about 158.6738564718.

Subtracting 3994994 from its reverse (4994993), we obtain a palindrome (999999).

The spelling of 3994994 in words is "three million, nine hundred ninety-four thousand, nine hundred ninety-four".