804978593 has 2 divisors, whose sum is σ = 804978594. Its totient is φ = 804978592.

The previous prime is 804978569. The next prime is 804978599. The reversal of 804978593 is 395879408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766625344 + 38353249 = 27688^2 + 6193^2 .

It is a cyclic number.

It is not a de Polignac number, because 804978593 - 2²² = 800784289 is a prime.

It is not a weakly prime, because it can be changed into another prime (804978599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402489296 + 402489297.

It is an arithmetic number, because the mean of its divisors is an integer number (402489297).

Almost surely, 2^804978593 is an apocalyptic number.

It is an amenable number.

804978593 is a deficient number, since it is larger than the sum of its proper divisors (1).

804978593 is an equidigital number, since it uses as much as digits as its factorization.

804978593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 804978593 is about 28372.1446669088. The cubic root of 804978593 is about 930.2395008864.

The spelling of 804978593 in words is "eight hundred four million, nine hundred seventy-eight thousand, five hundred ninety-three".