840086940 has 96 divisors (see below), whose sum is σ = 2932683264. Its totient is φ = 174562560.

The previous prime is 840086939. The next prime is 840086999. The reversal of 840086940 is 49680048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86299 + ... + 95538.

It is an arithmetic number, because the mean of its divisors is an integer number (30548784).

Almost surely, 2^840086940 is an apocalyptic number.

It is an amenable number.

840086940 is an abundant number, since it is smaller than the sum of its proper divisors (2092596324).

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

840086940 is a wasteful number, since it uses less digits than its factorization.

840086940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181867 (or 181865 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 840086940 is about 28984.2533110653. The cubic root of 840086940 is about 943.5713470288.

The spelling of 840086940 in words is "eight hundred forty million, eighty-six thousand, nine hundred forty".