840446284844 has 12 divisors (see below), whose sum is σ = 1471022985600. Its totient is φ = 420154003248.

The previous prime is 840446284819. The next prime is 840446284921. The reversal of 840446284844 is 448482644048.

It is a self number, because there is not a number n which added to its sum of digits gives 840446284844.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17257439 + ... + 17306070.

It is an arithmetic number, because the mean of its divisors is an integer number (122585248800).

Almost surely, 2^840446284844 is an apocalyptic number.

It is an amenable number.

840446284844 is a deficient number, since it is larger than the sum of its proper divisors (630576700756).

840446284844 is a wasteful number, since it uses less digits than its factorization.

840446284844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34569592 (or 34569590 counting only the distinct ones).

The product of its (nonzero) digits is 25165824, while the sum is 56.

The spelling of 840446284844 in words is "eight hundred forty billion, four hundred forty-six million, two hundred eighty-four thousand, eight hundred forty-four".