844834642 has 4 divisors (see below), whose sum is σ = 1267251966. Its totient is φ = 422417320.

The previous prime is 844834591. The next prime is 844834663. The reversal of 844834642 is 246438448.

844834642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 666104481 + 178730161 = 25809^2 + 13369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211208659 + ... + 211208662.

Almost surely, 2^844834642 is an apocalyptic number.

844834642 is a deficient number, since it is larger than the sum of its proper divisors (422417324).

844834642 is a wasteful number, since it uses less digits than its factorization.

844834642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422417323.

The product of its digits is 589824, while the sum is 43.

The square root of 844834642 is about 29066.0393242698. The cubic root of 844834642 is about 945.3455216825.

The spelling of 844834642 in words is "eight hundred forty-four million, eight hundred thirty-four thousand, six hundred forty-two".