804390733 has 2 divisors, whose sum is σ = 804390734. Its totient is φ = 804390732.

The previous prime is 804390731. The next prime is 804390787. The reversal of 804390733 is 337093408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774063684 + 30327049 = 27822^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 804390733 - 2¹ = 804390731 is a prime.

Together with 804390731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 804390692 and 804390701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804390731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402195366 + 402195367.

It is an arithmetic number, because the mean of its divisors is an integer number (402195367).

Almost surely, 2^804390733 is an apocalyptic number.

It is an amenable number.

804390733 is a deficient number, since it is larger than the sum of its proper divisors (1).

804390733 is an equidigital number, since it uses as much as digits as its factorization.

804390733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 804390733 is about 28361.7829658151. The cubic root of 804390733 is about 930.0130005505.

The spelling of 804390733 in words is "eight hundred four million, three hundred ninety thousand, seven hundred thirty-three".