840343414 has 4 divisors (see below), whose sum is σ = 1260515124. Its totient is φ = 420171706.

The previous prime is 840343397. The next prime is 840343417. The reversal of 840343414 is 414343048.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840343417) 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 as a sum of consecutive naturals, namely, 210085852 + ... + 210085855.

It is an arithmetic number, because the mean of its divisors is an integer number (315128781).

Almost surely, 2^840343414 is an apocalyptic number.

840343414 is a deficient number, since it is larger than the sum of its proper divisors (420171710).

840343414 is a wasteful number, since it uses less digits than its factorization.

840343414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420171709.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 840343414 is about 28988.6773413345. The cubic root of 840343414 is about 943.6673596687.

The spelling of 840343414 in words is "eight hundred forty million, three hundred forty-three thousand, four hundred fourteen".