849397 has 4 divisors (see below), whose sum is σ = 870156. Its totient is φ = 828640.

The previous prime is 849391. The next prime is 849419. The reversal of 849397 is 793948.

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 28561 + 820836 = 169^2 + 906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849391) 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, 10318 + ... + 10399.

It is an arithmetic number, because the mean of its divisors is an integer number (217539).

2⁸⁴⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

849397 is a deficient number, since it is larger than the sum of its proper divisors (20759).

849397 is a wasteful number, since it uses less digits than its factorization.

849397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20758.

The product of its digits is 54432, while the sum is 40.

The square root of 849397 is about 921.6273650451. The cubic root of 849397 is about 94.7044183118.

The spelling of 849397 in words is "eight hundred forty-nine thousand, three hundred ninety-seven".