840801 has 8 divisors (see below), whose sum is σ = 1207360. Its totient is φ = 517392.

The previous prime is 840767. The next prime is 840817. The reversal of 840801 is 108048.

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

It is not a de Polignac number, because 840801 - 2⁹ = 840289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10741 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (150920).

2⁸⁴⁰⁸⁰¹ is an apocalyptic number.

It is an amenable number.

840801 is a deficient number, since it is larger than the sum of its proper divisors (366559).

840801 is a wasteful number, since it uses less digits than its factorization.

840801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21575.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 840801 is about 916.9520161928. The cubic root of 840801 is about 94.3838611331.

Adding to 840801 its reverse (108048), we get a palindrome (948849).

The spelling of 840801 in words is "eight hundred forty thousand, eight hundred one".