840854 has 16 divisors (see below), whose sum is σ = 1526688. Its totient is φ = 339072.

The previous prime is 840841. The next prime is 840859. The reversal of 840854 is 458048.

840854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840859) by changing a digit.

840854 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 2004.

It is an arithmetic number, because the mean of its divisors is an integer number (95418).

2⁸⁴⁰⁸⁵⁴ is an apocalyptic number.

840854 is a deficient number, since it is larger than the sum of its proper divisors (685834).

840854 is a wasteful number, since it uses less digits than its factorization.

840854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 840854 is about 916.9809158319. The cubic root of 840854 is about 94.3858442577.

The spelling of 840854 in words is "eight hundred forty thousand, eight hundred fifty-four".