3994994993 has 8 divisors (see below), whose sum is σ = 4359411360. Its totient is φ = 3630784480.

The previous prime is 3994994989. The next prime is 3994995029.

It is a happy number.

3994994993 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 3994994993 - 2² = 3994994989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3994994903) by changing a digit.

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, 9380 + ... + 89877.

It is an arithmetic number, because the mean of its divisors is an integer number (544926420).

Almost surely, 2^3994994993 is an apocalyptic number.

It is an amenable number.

3994994993 is a deficient number, since it is larger than the sum of its proper divisors (364416367).

3994994993 is a wasteful number, since it uses less digits than its factorization.

3994994993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102927.

The product of its digits is 76527504, while the sum is 68.

The square root of 3994994993 is about 63205.9727636558. The cubic root of 3994994993 is about 1586.7386961853.

The spelling of 3994994993 in words is "three billion, nine hundred ninety-four million, nine hundred ninety-four thousand, nine hundred ninety-three".