857849500 has 48 divisors (see below), whose sum is σ = 1884093120. Its totient is φ = 341208000.

The previous prime is 857849479. The next prime is 857849501. The reversal of 857849500 is 5948758.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857849501) 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, 85761 + ... + 95239.

It is an arithmetic number, because the mean of its divisors is an integer number (39251940).

Almost surely, 2^857849500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857849500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942046560).

857849500 is an abundant number, since it is smaller than the sum of its proper divisors (1026243620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857849500 is a wasteful number, since it uses less digits than its factorization.

857849500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679 (or 9667 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 857849500 is about 29289.0679264465. The cubic root of 857849500 is about 950.1752216038.

The spelling of 857849500 in words is "eight hundred fifty-seven million, eight hundred forty-nine thousand, five hundred".