3865012 has 24 divisors (see below), whose sum is σ = 7229376. Its totient is φ = 1803648.

The previous prime is 3865009. The next prime is 3865013. The reversal of 3865012 is 2105683.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865013) 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, 3468 + ... + 4444.

It is an arithmetic number, because the mean of its divisors is an integer number (301224).

Almost surely, 2^3865012 is an apocalyptic number.

It is an amenable number.

3865012 is a deficient number, since it is larger than the sum of its proper divisors (3364364).

3865012 is a wasteful number, since it uses less digits than its factorization.

3865012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 3865012 is about 1965.9633770750. The cubic root of 3865012 is about 156.9339654951.

The spelling of 3865012 in words is "three million, eight hundred sixty-five thousand, twelve".