840933 has 12 divisors (see below), whose sum is σ = 1223040. Its totient is φ = 556776.

The previous prime is 840929. The next prime is 840941. The reversal of 840933 is 339048.

It is not a de Polignac number, because 840933 - 2² = 840929 is a prime.

It is a super-3 number, since 3×840933³ = 1784043506533338711, which contains 333 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 840897 and 840906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840923) 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 11 ways as a sum of consecutive naturals, for example, 1798 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2⁸⁴⁰⁹³³ is an apocalyptic number.

It is an amenable number.

840933 is a deficient number, since it is larger than the sum of its proper divisors (382107).

840933 is a wasteful number, since it uses less digits than its factorization.

840933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 840933 is about 917.0239909621. The cubic root of 840933 is about 94.3888000813.

The spelling of 840933 in words is "eight hundred forty thousand, nine hundred thirty-three".