840384115 has 8 divisors (see below), whose sum is σ = 1040992128. Its totient is φ = 650619840.

The previous prime is 840384113. The next prime is 840384157. The reversal of 840384115 is 511483048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 840384115 - 2¹ = 840384113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840384113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710762 + ... + 2711071.

It is an arithmetic number, because the mean of its divisors is an integer number (130124016).

Almost surely, 2^840384115 is an apocalyptic number.

840384115 is a deficient number, since it is larger than the sum of its proper divisors (200608013).

840384115 is a wasteful number, since it uses less digits than its factorization.

840384115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5421869.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 840384115 is about 28989.3793483062. The cubic root of 840384115 is about 943.6825945455.

The spelling of 840384115 in words is "eight hundred forty million, three hundred eighty-four thousand, one hundred fifteen".