804913 has 2 divisors, whose sum is σ = 804914. Its totient is φ = 804912.

The previous prime is 804901. The next prime is 804919. The reversal of 804913 is 319408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 153664 = 807^2 + 392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804913 is a prime.

It is not a weakly prime, because it can be changed into another prime (804919) 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, 402456 + 402457.

It is an arithmetic number, because the mean of its divisors is an integer number (402457).

2⁸⁰⁴⁹¹³ is an apocalyptic number.

It is an amenable number.

804913 is a deficient number, since it is larger than the sum of its proper divisors (1).

804913 is an equidigital number, since it uses as much as digits as its factorization.

804913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 804913 is about 897.1694377318. The cubic root of 804913 is about 93.0214233607.

The spelling of 804913 in words is "eight hundred four thousand, nine hundred thirteen".