844086642 has 32 divisors (see below), whose sum is σ = 1968720000. Its totient is φ = 241167024.

The previous prime is 844086599. The next prime is 844086667. The reversal of 844086642 is 246680448.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 844086594 and 844086603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203017 + ... + 207132.

It is an arithmetic number, because the mean of its divisors is an integer number (61522500).

Almost surely, 2^844086642 is an apocalyptic number.

844086642 is an abundant number, since it is smaller than the sum of its proper divisors (1124633358).

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

844086642 is a wasteful number, since it uses less digits than its factorization.

844086642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410175 (or 410161 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 844086642 is about 29053.1692247163. The cubic root of 844086642 is about 945.0664425163.

The spelling of 844086642 in words is "eight hundred forty-four million, eighty-six thousand, six hundred forty-two".