3993899 has 8 divisors (see below), whose sum is σ = 4915680. Its totient is φ = 3159936.

The previous prime is 3993893. The next prime is 3993901. The reversal of 3993899 is 9983993.

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

It is a de Polignac number, because none of the positive numbers 2^k-3993899 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3993893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21854 + ... + 22035.

It is an arithmetic number, because the mean of its divisors is an integer number (614460).

Almost surely, 2^3993899 is an apocalyptic number.

3993899 is a deficient number, since it is larger than the sum of its proper divisors (921781).

3993899 is a wasteful number, since it uses less digits than its factorization.

3993899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43909.

The product of its digits is 472392, while the sum is 50.

The square root of 3993899 is about 1998.4741679591. The cubic root of 3993899 is about 158.6593580145.

The spelling of 3993899 in words is "three million, nine hundred ninety-three thousand, eight hundred ninety-nine".