3856993 has 16 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 3168000.

The previous prime is 3856987. The next prime is 3856997. The reversal of 3856993 is 3996583.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3856993 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 25468 + ... + 25618.

It is an arithmetic number, because the mean of its divisors is an integer number (287280).

Almost surely, 2^3856993 is an apocalyptic number.

It is an amenable number.

3856993 is a deficient number, since it is larger than the sum of its proper divisors (739487).

3856993 is a wasteful number, since it uses less digits than its factorization.

3856993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

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

The square root of 3856993 is about 1963.9228599922. The cubic root of 3856993 is about 156.8253565346.

The spelling of 3856993 in words is "three million, eight hundred fifty-six thousand, nine hundred ninety-three".