844243055929 has 81 divisors (see below), whose sum is σ = 1114218902223. Its totient is φ = 637474821984.

The previous prime is 844243055881. The next prime is 844243055941. The reversal of 844243055929 is 929550342448.

The square root of 844243055929 is 918827.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 124888026025 + 719355029904 = 353395^2 + 848148^2 .

It is not a de Polignac number, because 844243055929 - 2¹⁵ = 844243023161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 844243055929.

It is not an unprimeable number, because it can be changed into a prime (844243055329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1923104692 + ... + 1923105130.

Almost surely, 2^844243055929 is an apocalyptic number.

844243055929 is the 918827-th square number.

844243055929 is the 459414-th centered octagonal number.

It is an amenable number.

844243055929 is a deficient number, since it is larger than the sum of its proper divisors (269975846294).

844243055929 is an equidigital number, since it uses as much as digits as its factorization.

844243055929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 844243055929 in words is "eight hundred forty-four billion, two hundred forty-three million, fifty-five thousand, nine hundred twenty-nine".