857384823 has 16 divisors (see below), whose sum is σ = 1255668480. Its totient is φ = 517961664.

The previous prime is 857384821. The next prime is 857384837. The reversal of 857384823 is 328483758.

It is not a de Polignac number, because 857384823 - 2¹ = 857384821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857384821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325686 + ... + 328307.

It is an arithmetic number, because the mean of its divisors is an integer number (78479280).

Almost surely, 2^857384823 is an apocalyptic number.

857384823 is a deficient number, since it is larger than the sum of its proper divisors (398283657).

857384823 is a wasteful number, since it uses less digits than its factorization.

857384823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654038.

The product of its digits is 1290240, while the sum is 48.

The square root of 857384823 is about 29281.1342505716. The cubic root of 857384823 is about 950.0036280563.

The spelling of 857384823 in words is "eight hundred fifty-seven million, three hundred eighty-four thousand, eight hundred twenty-three".