3857841 has 32 divisors (see below), whose sum is σ = 6384000. Its totient is φ = 2286144.

The previous prime is 3857839. The next prime is 3857863. The reversal of 3857841 is 1487583.

It is not a de Polignac number, because 3857841 - 2¹ = 3857839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3857796 and 3857805.

It is not an unprimeable number, because it can be changed into a prime (3857801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9990 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (199500).

Almost surely, 2^3857841 is an apocalyptic number.

It is an amenable number.

3857841 is a deficient number, since it is larger than the sum of its proper divisors (2526159).

3857841 is a wasteful number, since it uses less digits than its factorization.

3857841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 424 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 3857841 is about 1964.1387425536. The cubic root of 3857841 is about 156.8368489207.

The spelling of 3857841 in words is "three million, eight hundred fifty-seven thousand, eight hundred forty-one".