3939799 has 4 divisors (see below), whose sum is σ = 3943864. Its totient is φ = 3935736.

The previous prime is 3939791. The next prime is 3939811. The reversal of 3939799 is 9979393.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9979393 = 29 ⋅344117.

It is a cyclic number.

It is not a de Polignac number, because 3939799 - 2³ = 3939791 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 (3939791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364 + ... + 2830.

It is an arithmetic number, because the mean of its divisors is an integer number (985966).

Almost surely, 2^3939799 is an apocalyptic number.

3939799 is a deficient number, since it is larger than the sum of its proper divisors (4065).

3939799 is a wasteful number, since it uses less digits than its factorization.

3939799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064.

The product of its digits is 413343, while the sum is 49.

The square root of 3939799 is about 1984.8926923136. The cubic root of 3939799 is about 157.9397168947.

The spelling of 3939799 in words is "three million, nine hundred thirty-nine thousand, seven hundred ninety-nine".