857349 has 6 divisors (see below), whose sum is σ = 1238406. Its totient is φ = 571560.

The previous prime is 857347. The next prime is 857357. The reversal of 857349 is 943758.

It can be written as a sum of positive squares in only one way, i.e., 562500 + 294849 = 750^2 + 543^2 .

It is not a de Polignac number, because 857349 - 2¹ = 857347 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47622 + ... + 47639.

It is an arithmetic number, because the mean of its divisors is an integer number (206401).

2⁸⁵⁷³⁴⁹ is an apocalyptic number.

It is an amenable number.

857349 is a deficient number, since it is larger than the sum of its proper divisors (381057).

857349 is a wasteful number, since it uses less digits than its factorization.

857349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95267 (or 95264 counting only the distinct ones).

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

The square root of 857349 is about 925.9314229466. The cubic root of 857349 is about 94.9990396948. Note that the first 3 decimals are identical.

The spelling of 857349 in words is "eight hundred fifty-seven thousand, three hundred forty-nine".