840840414 has 16 divisors (see below), whose sum is σ = 1682778240. Its totient is φ = 280097240.

The previous prime is 840840391. The next prime is 840840439. The reversal of 840840414 is 414048048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35592 + ... + 54299.

It is an arithmetic number, because the mean of its divisors is an integer number (105173640).

Almost surely, 2^840840414 is an apocalyptic number.

840840414 is an abundant number, since it is smaller than the sum of its proper divisors (841937826).

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

840840414 is a wasteful number, since it uses less digits than its factorization.

840840414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91455.

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 840840414 is about 28997.2483867004. The cubic root of 840840414 is about 943.8533591226.

The spelling of 840840414 in words is "eight hundred forty million, eight hundred forty thousand, four hundred fourteen".