3993989999 has 8 divisors (see below), whose sum is σ = 4029070080. Its totient is φ = 3959000856.

The previous prime is 3993989959. The next prime is 3993990029. The reversal of 3993989999 is 9999893993.

It is a happy number.

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 3993989999 - 2⁸ = 3993989743 is a prime.

It is a super-2 number, since 2×3993989999² = 31903912224224040002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993989959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67034 + ... + 111720.

It is an arithmetic number, because the mean of its divisors is an integer number (503633760).

Almost surely, 2^3993989999 is an apocalyptic number.

3993989999 is a deficient number, since it is larger than the sum of its proper divisors (35080081).

3993989999 is a wasteful number, since it uses less digits than its factorization.

3993989999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45469.

The product of its digits is 344373768, while the sum is 77.

The square root of 3993989999 is about 63198.0221130377. The cubic root of 3993989999 is about 1586.6056299687.

The spelling of 3993989999 in words is "three billion, nine hundred ninety-three million, nine hundred eighty-nine thousand, nine hundred ninety-nine".