3856990 has 16 divisors (see below), whose sum is σ = 6999552. Its totient is φ = 1530144.

The previous prime is 3856987. The next prime is 3856997. The reversal of 3856990 is 996583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249 + ... + 2788.

It is an arithmetic number, because the mean of its divisors is an integer number (437472).

Almost surely, 2^3856990 is an apocalyptic number.

3856990 is a deficient number, since it is larger than the sum of its proper divisors (3142562).

3856990 is a wasteful number, since it uses less digits than its factorization.

3856990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 3856990 is about 1963.9220962146. The cubic root of 3856990 is about 156.8253158746.

The spelling of 3856990 in words is "three million, eight hundred fifty-six thousand, nine hundred ninety".