840593 has 4 divisors (see below), whose sum is σ = 905268. Its totient is φ = 775920.

The previous prime is 840589. The next prime is 840601. The reversal of 840593 is 395048.

840593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53824 + 786769 = 232^2 + 887^2 .

It is a cyclic number.

It is not a de Polignac number, because 840593 - 2² = 840589 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (840523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32318 + ... + 32343.

It is an arithmetic number, because the mean of its divisors is an integer number (226317).

2⁸⁴⁰⁵⁹³ is an apocalyptic number.

It is an amenable number.

840593 is a deficient number, since it is larger than the sum of its proper divisors (64675).

840593 is a wasteful number, since it uses less digits than its factorization.

840593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64674.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 840593 is about 916.8385899383. The cubic root of 840593 is about 94.3760774989.

The spelling of 840593 in words is "eight hundred forty thousand, five hundred ninety-three".