857339 has 4 divisors (see below), whose sum is σ = 979824. Its totient is φ = 734856.

The previous prime is 857333. The next prime is 857341. The reversal of 857339 is 933758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 857339 - 2⁸ = 857083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 857299 and 857308.

It is not an unprimeable number, because it can be changed into a prime (857333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61232 + ... + 61245.

It is an arithmetic number, because the mean of its divisors is an integer number (244956).

2⁸⁵⁷³³⁹ is an apocalyptic number.

857339 is a deficient number, since it is larger than the sum of its proper divisors (122485).

857339 is a wasteful number, since it uses less digits than its factorization.

857339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122484.

The product of its digits is 22680, while the sum is 35.

The square root of 857339 is about 925.9260229630. The cubic root of 857339 is about 94.9986703415.

The spelling of 857339 in words is "eight hundred fifty-seven thousand, three hundred thirty-nine".