857546039 has 16 divisors (see below), whose sum is σ = 991967808. Its totient is φ = 726147072.

The previous prime is 857546021. The next prime is 857546051. The reversal of 857546039 is 930645758.

It is not a de Polignac number, because 857546039 - 2¹² = 857541943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 857545984 and 857546002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857546009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264959 + ... + 268175.

It is an arithmetic number, because the mean of its divisors is an integer number (61997988).

Almost surely, 2^857546039 is an apocalyptic number.

857546039 is a deficient number, since it is larger than the sum of its proper divisors (134421769).

857546039 is a wasteful number, since it uses less digits than its factorization.

857546039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 857546039 is about 29283.8870199979. The cubic root of 857546039 is about 950.0631680989.

The spelling of 857546039 in words is "eight hundred fifty-seven million, five hundred forty-six thousand, thirty-nine".