840323683 has 2 divisors, whose sum is σ = 840323684. Its totient is φ = 840323682.

The previous prime is 840323681. The next prime is 840323779. The reversal of 840323683 is 386323048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 840323683 - 2¹ = 840323681 is a prime.

It is a super-2 number, since 2×840323683² = 1412287784421368978, which contains 22 as substring.

Together with 840323681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (840323681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420161841 + 420161842.

It is an arithmetic number, because the mean of its divisors is an integer number (420161842).

Almost surely, 2^840323683 is an apocalyptic number.

840323683 is a deficient number, since it is larger than the sum of its proper divisors (1).

840323683 is an equidigital number, since it uses as much as digits as its factorization.

840323683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 840323683 is about 28988.3370168073. The cubic root of 840323683 is about 943.6599739396.

The spelling of 840323683 in words is "eight hundred forty million, three hundred twenty-three thousand, six hundred eighty-three".