840535971 has 32 divisors (see below), whose sum is σ = 1283731200. Its totient is φ = 484471680.

The previous prime is 840535939. The next prime is 840535973. The reversal of 840535971 is 179535048.

840535971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840535971 - 2⁵ = 840535939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840535973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57565 + ... + 70673.

It is an arithmetic number, because the mean of its divisors is an integer number (40116600).

Almost surely, 2^840535971 is an apocalyptic number.

840535971 is a deficient number, since it is larger than the sum of its proper divisors (443195229).

840535971 is a wasteful number, since it uses less digits than its factorization.

840535971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13219.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 840535971 is about 28991.9983961092. The cubic root of 840535971 is about 943.7394317428.

The spelling of 840535971 in words is "eight hundred forty million, five hundred thirty-five thousand, nine hundred seventy-one".