840794454 has 12 divisors (see below), whose sum is σ = 1821721356. Its totient is φ = 280264812.

The previous prime is 840794453. The next prime is 840794473. The reversal of 840794454 is 454497048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840794453) 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 5 ways as a sum of consecutive naturals, for example, 23355384 + ... + 23355419.

It is an arithmetic number, because the mean of its divisors is an integer number (151810113).

Almost surely, 2^840794454 is an apocalyptic number.

840794454 is an abundant number, since it is smaller than the sum of its proper divisors (980926902).

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

840794454 is a wasteful number, since it uses less digits than its factorization.

840794454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46710811 (or 46710808 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 840794454 is about 28996.4558868838. The cubic root of 840794454 is about 943.8361619271.

The spelling of 840794454 in words is "eight hundred forty million, seven hundred ninety-four thousand, four hundred fifty-four".