840986844 has 12 divisors (see below), whose sum is σ = 1962302664. Its totient is φ = 280328944.

The previous prime is 840986833. The next prime is 840986851. The reversal of 840986844 is 448689048.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 35041107 + ... + 35041130.

It is an arithmetic number, because the mean of its divisors is an integer number (163525222).

Almost surely, 2^840986844 is an apocalyptic number.

It is an amenable number.

840986844 is an abundant number, since it is smaller than the sum of its proper divisors (1121315820).

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

840986844 is a wasteful number, since it uses less digits than its factorization.

840986844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70082244 (or 70082242 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The square root of 840986844 is about 28999.7731715267. The cubic root of 840986844 is about 943.9081457475.

The spelling of 840986844 in words is "eight hundred forty million, nine hundred eighty-six thousand, eight hundred forty-four".