3936859 has 4 divisors (see below), whose sum is σ = 3940920. Its totient is φ = 3932800.

The previous prime is 3936839. The next prime is 3936869. The reversal of 3936859 is 9586393.

3936859 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9586393 = 19 ⋅504547.

It is a cyclic number.

It is not a de Polignac number, because 3936859 - 2⁵ = 3936827 is a prime.

It is a super-3 number, since 3×3936859³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

3936859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3936839) 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, 372 + ... + 2830.

It is an arithmetic number, because the mean of its divisors is an integer number (985230).

Almost surely, 2^3936859 is an apocalyptic number.

3936859 is a deficient number, since it is larger than the sum of its proper divisors (4061).

3936859 is a wasteful number, since it uses less digits than its factorization.

3936859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060.

The product of its digits is 174960, while the sum is 43.

The square root of 3936859 is about 1984.1519599063. The cubic root of 3936859 is about 157.9004206161.

The spelling of 3936859 in words is "three million, nine hundred thirty-six thousand, eight hundred fifty-nine".