3861843 has 8 divisors (see below), whose sum is σ = 5326800. Its totient is φ = 2485728.

The previous prime is 3861841. The next prime is 3861857. The reversal of 3861843 is 3481683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3861843 - 2¹ = 3861841 is a prime.

It is an Ulam number.

3861843 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3861841) 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, 22108 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (665850).

Almost surely, 2^3861843 is an apocalyptic number.

3861843 is a deficient number, since it is larger than the sum of its proper divisors (1464957).

3861843 is a wasteful number, since it uses less digits than its factorization.

3861843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44421.

The product of its digits is 13824, while the sum is 33.

The square root of 3861843 is about 1965.1572456167. The cubic root of 3861843 is about 156.8910626770.

The spelling of 3861843 in words is "three million, eight hundred sixty-one thousand, eight hundred forty-three".