849121 has 24 divisors (see below), whose sum is σ = 1123584. Its totient is φ = 635040.

The previous prime is 849119. The next prime is 849127. The reversal of 849121 is 121948.

It is a happy number.

It is not a de Polignac number, because 849121 - 2¹ = 849119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (849127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19726 + ... + 19768.

It is an arithmetic number, because the mean of its divisors is an integer number (46816).

2⁸⁴⁹¹²¹ is an apocalyptic number.

It is an amenable number.

849121 is a deficient number, since it is larger than the sum of its proper divisors (274463).

849121 is a wasteful number, since it uses less digits than its factorization.

849121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 94 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 849121 is about 921.4776177423. The cubic root of 849121 is about 94.6941595631.

The spelling of 849121 in words is "eight hundred forty-nine thousand, one hundred twenty-one".