840994 has 32 divisors (see below), whose sum is σ = 1622016. Its totient is φ = 317520.

The previous prime is 840991. The next prime is 841003. The reversal of 840994 is 499048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6559 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (50688).

2⁸⁴⁰⁹⁹⁴ is an apocalyptic number.

840994 is a deficient number, since it is larger than the sum of its proper divisors (781022).

840994 is a wasteful number, since it uses less digits than its factorization.

840994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 840994 is about 917.0572501213. The cubic root of 840994 is about 94.3910822994.

The spelling of 840994 in words is "eight hundred forty thousand, nine hundred ninety-four".