844929625449 has 16 divisors (see below), whose sum is σ = 1386551180672. Its totient is φ = 445677164928.

The previous prime is 844929625447. The next prime is 844929625469. The reversal of 844929625449 is 944526929448.

It is a happy number.

It is not a de Polignac number, because 844929625449 - 2¹ = 844929625447 is a prime.

It is a super-2 number, since 2×844929625449² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 844929625449.

It is not an unprimeable number, because it can be changed into a prime (844929625447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547489884 + ... + 1547490429.

It is an arithmetic number, because the mean of its divisors is an integer number (86659448792).

Almost surely, 2^844929625449 is an apocalyptic number.

It is an amenable number.

844929625449 is a deficient number, since it is larger than the sum of its proper divisors (541621555223).

844929625449 is a wasteful number, since it uses less digits than its factorization.

844929625449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094980336.

The product of its digits is 179159040, while the sum is 66.

The spelling of 844929625449 in words is "eight hundred forty-four billion, nine hundred twenty-nine million, six hundred twenty-five thousand, four hundred forty-nine".