840082443 has 16 divisors (see below), whose sum is σ = 1147132800. Its totient is φ = 546565824.

The previous prime is 840082393. The next prime is 840082457. The reversal of 840082443 is 344280048.

It is not a de Polignac number, because 840082443 - 2¹³ = 840074251 is a prime.

It is a super-2 number, since 2×840082443² = 1411477022073696498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (840082483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217255 + ... + 221087.

It is an arithmetic number, because the mean of its divisors is an integer number (71695800).

Almost surely, 2^840082443 is an apocalyptic number.

840082443 is a deficient number, since it is larger than the sum of its proper divisors (307050357).

840082443 is a wasteful number, since it uses less digits than its factorization.

840082443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578.

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 840082443 is about 28984.1757343555. The cubic root of 840082443 is about 943.5696633745.

The spelling of 840082443 in words is "eight hundred forty million, eighty-two thousand, four hundred forty-three".