3999799 has 4 divisors (see below), whose sum is σ = 4038736. Its totient is φ = 3960864.

The previous prime is 3999791. The next prime is 3999803. The reversal of 3999799 is 9979993.

3999799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3999799 - 2³ = 3999791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19314 + ... + 19519.

It is an arithmetic number, because the mean of its divisors is an integer number (1009684).

Almost surely, 2^3999799 is an apocalyptic number.

3999799 is a deficient number, since it is larger than the sum of its proper divisors (38937).

3999799 is a wasteful number, since it uses less digits than its factorization.

3999799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38936.

The product of its digits is 1240029, while the sum is 55.

The square root of 3999799 is about 1999.9497493687. The cubic root of 3999799 is about 158.7374462555.

The spelling of 3999799 in words is "three million, nine hundred ninety-nine thousand, seven hundred ninety-nine".