3859857 has 6 divisors (see below), whose sum is σ = 5575362. Its totient is φ = 2573232.

The previous prime is 3859847. The next prime is 3859879. The reversal of 3859857 is 7589583.

3859857 is a `hidden beast` number, since 3 + 8 + 598 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 207936 = 1911^2 + 456^2 .

It is not a de Polignac number, because 3859857 - 2¹¹ = 3857809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3859847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214428 + ... + 214445.

It is an arithmetic number, because the mean of its divisors is an integer number (929227).

Almost surely, 2^3859857 is an apocalyptic number.

It is an amenable number.

3859857 is a deficient number, since it is larger than the sum of its proper divisors (1715505).

3859857 is a wasteful number, since it uses less digits than its factorization.

3859857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428879 (or 428876 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 3859857 is about 1964.6518775600. The cubic root of 3859857 is about 156.8641636827.

It can be divided in two parts, 38 and 59857, that added together give a palindrome (59895).

The spelling of 3859857 in words is "three million, eight hundred fifty-nine thousand, eight hundred fifty-seven".