849257 has 4 divisors (see below), whose sum is σ = 854340. Its totient is φ = 844176.

The previous prime is 849253. The next prime is 849271. The reversal of 849257 is 752948.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 817216 + 32041 = 904^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 849257 - 2² = 849253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282 + ... + 2627.

It is an arithmetic number, because the mean of its divisors is an integer number (213585).

2⁸⁴⁹²⁵⁷ is an apocalyptic number.

It is an amenable number.

849257 is a deficient number, since it is larger than the sum of its proper divisors (5083).

849257 is a wasteful number, since it uses less digits than its factorization.

849257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082.

The product of its digits is 20160, while the sum is 35.

The square root of 849257 is about 921.5514093093. The cubic root of 849257 is about 94.6992148765.

The spelling of 849257 in words is "eight hundred forty-nine thousand, two hundred fifty-seven".