849445 has 4 divisors (see below), whose sum is σ = 1019340. Its totient is φ = 679552.

The previous prime is 849427. The next prime is 849461. The reversal of 849445 is 544948.

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 199809 + 649636 = 447^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 849445 - 2⁹ = 848933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 849445.

It is a congruent number.

It is an unprimeable number.

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, 84940 + ... + 84949.

It is an arithmetic number, because the mean of its divisors is an integer number (254835).

2⁸⁴⁹⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

849445 is a deficient number, since it is larger than the sum of its proper divisors (169895).

849445 is a wasteful number, since it uses less digits than its factorization.

849445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169894.

The product of its digits is 23040, while the sum is 34.

The square root of 849445 is about 921.6534055707. The cubic root of 849445 is about 94.7062022152.

The spelling of 849445 in words is "eight hundred forty-nine thousand, four hundred forty-five".