844866464859 has 12 divisors (see below), whose sum is σ = 1221251518656. Its totient is φ = 562834072752.

The previous prime is 844866464851. The next prime is 844866464881. The reversal of 844866464859 is 958464668448.

844866464859 is a `hidden beast` number, since 8 + 4 + 4 + 86 + 6 + 464 + 85 + 9 = 666.

It is not a de Polignac number, because 844866464859 - 2³ = 844866464851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (844866464851) 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 11 ways as a sum of consecutive naturals, for example, 34173387 + ... + 34198100.

It is an arithmetic number, because the mean of its divisors is an integer number (101770959888).

Almost surely, 2^844866464859 is an apocalyptic number.

844866464859 is a deficient number, since it is larger than the sum of its proper divisors (376385053797).

844866464859 is a wasteful number, since it uses less digits than its factorization.

844866464859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68372866 (or 68372863 counting only the distinct ones).

The product of its digits is 1274019840, while the sum is 72.

The spelling of 844866464859 in words is "eight hundred forty-four billion, eight hundred sixty-six million, four hundred sixty-four thousand, eight hundred fifty-nine".