849949 has 8 divisors (see below), whose sum is σ = 908280. Its totient is φ = 795328.

The previous prime is 849943. The next prime is 849967. The reversal of 849949 is 949948.

It can be written as a sum of positive squares in 4 ways, for example, as 338724 + 511225 = 582^2 + 715^2 .

It is not a de Polignac number, because 849949 - 2⁵ = 849917 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 (849943) 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 7 ways as a sum of consecutive naturals, for example, 4827 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (113535).

2⁸⁴⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

849949 is a deficient number, since it is larger than the sum of its proper divisors (58331).

849949 is an equidigital number, since it uses as much as digits as its factorization.

849949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 190 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 849949 is about 921.9267866810. The cubic root of 849949 is about 94.7249291442.

Subtracting 849949 from its reverse (949948), we obtain a palindrome (99999).

The spelling of 849949 in words is "eight hundred forty-nine thousand, nine hundred forty-nine".