849959 has 4 divisors (see below), whose sum is σ = 927240. Its totient is φ = 772680.

The previous prime is 849943. The next prime is 849967. The reversal of 849959 is 959948.

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

It is a cyclic number.

It is not a de Polignac number, because 849959 - 2⁴ = 849943 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 (848959) 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 3 ways as a sum of consecutive naturals, for example, 38624 + ... + 38645.

It is an arithmetic number, because the mean of its divisors is an integer number (231810).

2⁸⁴⁹⁹⁵⁹ is an apocalyptic number.

849959 is a deficient number, since it is larger than the sum of its proper divisors (77281).

849959 is a wasteful number, since it uses less digits than its factorization.

849959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77280.

The product of its digits is 116640, while the sum is 44.

The square root of 849959 is about 921.9322100892. The cubic root of 849959 is about 94.7253006354.

It can be divided in two parts, 8499 and 59, that added together give a palindrome (8558).

The spelling of 849959 in words is "eight hundred forty-nine thousand, nine hundred fifty-nine".