840163 has 2 divisors, whose sum is σ = 840164. Its totient is φ = 840162.

The previous prime is 840149. The next prime is 840179. The reversal of 840163 is 361048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 840163 - 2⁹ = 839651 is a prime.

It is not a weakly prime, because it can be changed into another prime (840863) 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 as a sum of consecutive naturals, namely, 420081 + 420082.

It is an arithmetic number, because the mean of its divisors is an integer number (420082).

2⁸⁴⁰¹⁶³ is an apocalyptic number.

840163 is a deficient number, since it is larger than the sum of its proper divisors (1).

840163 is an equidigital number, since it uses as much as digits as its factorization.

840163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 840163 is about 916.6040584680. The cubic root of 840163 is about 94.3599822602.

It can be divided in two parts, 8401 and 63, that added together give a square (8464 = 92²).

The spelling of 840163 in words is "eight hundred forty thousand, one hundred sixty-three".