804678893 has 2 divisors, whose sum is σ = 804678894. Its totient is φ = 804678892.

The previous prime is 804678883. The next prime is 804678929. The reversal of 804678893 is 398876408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753941764 + 50737129 = 27458^2 + 7123^2 .

It is a cyclic number.

It is not a de Polignac number, because 804678893 - 2⁶ = 804678829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804678883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402339446 + 402339447.

It is an arithmetic number, because the mean of its divisors is an integer number (402339447).

Almost surely, 2^804678893 is an apocalyptic number.

It is an amenable number.

804678893 is a deficient number, since it is larger than the sum of its proper divisors (1).

804678893 is an equidigital number, since it uses as much as digits as its factorization.

804678893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 804678893 is about 28366.8625864758. The cubic root of 804678893 is about 930.1240413421.

The spelling of 804678893 in words is "eight hundred four million, six hundred seventy-eight thousand, eight hundred ninety-three".