804901 has 2 divisors, whose sum is σ = 804902. Its totient is φ = 804900.

The previous prime is 804893. The next prime is 804913. The reversal of 804901 is 109408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 720801 + 84100 = 849^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 804901 - 2³ = 804893 is a prime.

It is an Ulam number.

804901 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402450 + 402451.

It is an arithmetic number, because the mean of its divisors is an integer number (402451).

2⁸⁰⁴⁹⁰¹ is an apocalyptic number.

It is an amenable number.

804901 is a deficient number, since it is larger than the sum of its proper divisors (1).

804901 is an equidigital number, since it uses as much as digits as its factorization.

804901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 804901 is about 897.1627500069. The cubic root of 804901 is about 93.0209610902.

The spelling of 804901 in words is "eight hundred four thousand, nine hundred one".