857493 has 32 divisors (see below), whose sum is σ = 1568000. Its totient is φ = 451008.

The previous prime is 857471. The next prime is 857513. The reversal of 857493 is 394758.

857493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 857493 - 2¹⁰ = 856469 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (30240) is a multiple of the sum of its prime factors (378).

857493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2283 + ... + 2631.

It is an arithmetic number, because the mean of its divisors is an integer number (49000).

2⁸⁵⁷⁴⁹³ is an apocalyptic number.

It is an amenable number.

857493 is a deficient number, since it is larger than the sum of its proper divisors (710507).

857493 is a wasteful number, since it uses less digits than its factorization.

857493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 857493 is about 926.0091792202. The cubic root of 857493 is about 95.0043580642.

The spelling of 857493 in words is "eight hundred fifty-seven thousand, four hundred ninety-three".