840863298 has 16 divisors (see below), whose sum is σ = 1834610976. Its totient is φ = 254807040.

The previous prime is 840863293. The next prime is 840863311. The reversal of 840863298 is 892368048.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (840863293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6370111 + ... + 6370242.

It is an arithmetic number, because the mean of its divisors is an integer number (114663186).

Almost surely, 2^840863298 is an apocalyptic number.

840863298 is an abundant number, since it is smaller than the sum of its proper divisors (993747678).

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

840863298 is a wasteful number, since it uses less digits than its factorization.

840863298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12740369.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 840863298 is about 28997.6429731797. The cubic root of 840863298 is about 943.8619215655.

The spelling of 840863298 in words is "eight hundred forty million, eight hundred sixty-three thousand, two hundred ninety-eight".