857882839 has 8 divisors (see below), whose sum is σ = 938527632. Its totient is φ = 777680640.

The previous prime is 857882827. The next prime is 857882863. The reversal of 857882839 is 938288758.

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

It is not a de Polignac number, because 857882839 - 2¹¹ = 857880791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857882899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106584 + ... + 114349.

It is an arithmetic number, because the mean of its divisors is an integer number (117315954).

Almost surely, 2^857882839 is an apocalyptic number.

857882839 is a deficient number, since it is larger than the sum of its proper divisors (80644793).

857882839 is a wasteful number, since it uses less digits than its factorization.

857882839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221297.

The product of its digits is 7741440, while the sum is 58.

The square root of 857882839 is about 29289.6370581815. The cubic root of 857882839 is about 950.1875304766.

The spelling of 857882839 in words is "eight hundred fifty-seven million, eight hundred eighty-two thousand, eight hundred thirty-nine".