857494812 has 48 divisors (see below), whose sum is σ = 2038932000. Its totient is φ = 280412160.

The previous prime is 857494801. The next prime is 857494853. The reversal of 857494812 is 218494758.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327364 + ... + 329972.

It is an arithmetic number, because the mean of its divisors is an integer number (42477750).

Almost surely, 2^857494812 is an apocalyptic number.

It is an amenable number.

857494812 is an abundant number, since it is smaller than the sum of its proper divisors (1181437188).

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

857494812 is a wasteful number, since it uses less digits than its factorization.

857494812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3124 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 857494812 is about 29283.0123450440. The cubic root of 857494812 is about 950.0442498318.

The spelling of 857494812 in words is "eight hundred fifty-seven million, four hundred ninety-four thousand, eight hundred twelve".