3856039 has 4 divisors (see below), whose sum is σ = 4206600. Its totient is φ = 3505480.

The previous prime is 3856037. The next prime is 3856067. The reversal of 3856039 is 9306583.

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

It is not a de Polignac number, because 3856039 - 2¹ = 3856037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3855995 and 3856013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856033) 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, 175264 + ... + 175285.

It is an arithmetic number, because the mean of its divisors is an integer number (1051650).

Almost surely, 2^3856039 is an apocalyptic number.

3856039 is a deficient number, since it is larger than the sum of its proper divisors (350561).

3856039 is a wasteful number, since it uses less digits than its factorization.

3856039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350560.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3856039 is about 1963.6799637415. The cubic root of 3856039 is about 156.8124255867.

The spelling of 3856039 in words is "three million, eight hundred fifty-six thousand, thirty-nine".