383857 has 8 divisors (see below), whose sum is σ = 410400. Its totient is φ = 357984.

The previous prime is 383839. The next prime is 383869. The reversal of 383857 is 758383.

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

It is a cyclic number.

It is not a de Polignac number, because 383857 - 2⁷ = 383729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (383807) 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, 1578 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2³⁸³⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

383857 is a deficient number, since it is larger than the sum of its proper divisors (26543).

383857 is a wasteful number, since it uses less digits than its factorization.

383857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 20160, while the sum is 34.

The square root of 383857 is about 619.5619420203. The cubic root of 383857 is about 72.6758000846.

The spelling of 383857 in words is "three hundred eighty-three thousand, eight hundred fifty-seven".