857148859 has 16 divisors (see below), whose sum is σ = 997920000. Its totient is φ = 721086624.

The previous prime is 857148847. The next prime is 857148869. The reversal of 857148859 is 958841758.

It is a cyclic number.

It is not a de Polignac number, because 857148859 - 2⁵ = 857148827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (857148869) 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, 76392 + ... + 86890.

It is an arithmetic number, because the mean of its divisors is an integer number (62370000).

Almost surely, 2^857148859 is an apocalyptic number.

857148859 is a deficient number, since it is larger than the sum of its proper divisors (140771141).

857148859 is a wasteful number, since it uses less digits than its factorization.

857148859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722.

The product of its digits is 3225600, while the sum is 55.

The square root of 857148859 is about 29277.1046895010. The cubic root of 857148859 is about 949.9164687405.

The spelling of 857148859 in words is "eight hundred fifty-seven million, one hundred forty-eight thousand, eight hundred fifty-nine".