840983 has 8 divisors (see below), whose sum is σ = 988176. Its totient is φ = 705600.

The previous prime is 840979. The next prime is 840989. The reversal of 840983 is 389048.

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

It is a cyclic number.

It is not a de Polignac number, because 840983 - 2² = 840979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840989) 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 7 ways as a sum of consecutive naturals, for example, 2798 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (123522).

2⁸⁴⁰⁹⁸³ is an apocalyptic number.

840983 is a deficient number, since it is larger than the sum of its proper divisors (147193).

840983 is a wasteful number, since it uses less digits than its factorization.

840983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 840983 is about 917.0512526571. The cubic root of 840983 is about 94.3906707600.

The spelling of 840983 in words is "eight hundred forty thousand, nine hundred eighty-three".