3994664012 has 24 divisors (see below), whose sum is σ = 7723701216. Its totient is φ = 1798108928.

The previous prime is 3994663913. The next prime is 3994664057. The reversal of 3994664012 is 2104664993.

It is a happy number.

It is a super-2 number, since 2×3994664012² = 31914681137535872288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275503 + ... + 1278630.

It is an arithmetic number, because the mean of its divisors is an integer number (321820884).

Almost surely, 2^3994664012 is an apocalyptic number.

It is an amenable number.

3994664012 is a deficient number, since it is larger than the sum of its proper divisors (3729037204).

3994664012 is a wasteful number, since it uses less digits than its factorization.

3994664012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554177 (or 2554175 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 3994664012 is about 63203.3544362955. The cubic root of 3994664012 is about 1586.6948751154.

The spelling of 3994664012 in words is "three billion, nine hundred ninety-four million, six hundred sixty-four thousand, twelve".