844476287868 has 36 divisors (see below), whose sum is σ = 2134685454720. Its totient is φ = 281487208896.

The previous prime is 844476287861. The next prime is 844476287927. The reversal of 844476287868 is 868782674448.

It is a happy number.

844476287868 is a `hidden beast` number, since 8 + 4 + 4 + 476 + 28 + 78 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 844476287796 and 844476287805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844476287861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2330896 + ... + 2668712.

Almost surely, 2^844476287868 is an apocalyptic number.

It is an amenable number.

844476287868 is an abundant number, since it is smaller than the sum of its proper divisors (1290209166852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844476287868 is a wasteful number, since it uses less digits than its factorization.

844476287868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407266 (or 407261 counting only the distinct ones).

The product of its digits is 924844032, while the sum is 72.

The spelling of 844476287868 in words is "eight hundred forty-four billion, four hundred seventy-six million, two hundred eighty-seven thousand, eight hundred sixty-eight".