3856743 has 24 divisors (see below), whose sum is σ = 6140160. Its totient is φ = 2313360.

The previous prime is 3856733. The next prime is 3856751. The reversal of 3856743 is 3476583.

It is a happy number.

It is not a de Polignac number, because 3856743 - 2⁹ = 3856231 is a prime.

It is an alternating number because its digits alternate between odd and even.

3856743 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3856698 and 3856707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16018 + ... + 16256.

It is an arithmetic number, because the mean of its divisors is an integer number (255840).

Almost surely, 2^3856743 is an apocalyptic number.

3856743 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3856743 is a deficient number, since it is larger than the sum of its proper divisors (2283417).

3856743 is a wasteful number, since it uses less digits than its factorization.

3856743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 416 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3856743 is about 1963.8592108397. The cubic root of 3856743 is about 156.8219681276.

The spelling of 3856743 in words is "three million, eight hundred fifty-six thousand, seven hundred forty-three".