804509273 has 2 divisors, whose sum is σ = 804509274. Its totient is φ = 804509272.

The previous prime is 804509261. The next prime is 804509327. The reversal of 804509273 is 372905408.

Together with next prime (804509327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429815824 + 374693449 = 20732^2 + 19357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804509273 is a prime.

It is not a weakly prime, because it can be changed into another prime (804509243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402254636 + 402254637.

It is an arithmetic number, because the mean of its divisors is an integer number (402254637).

Almost surely, 2^804509273 is an apocalyptic number.

It is an amenable number.

804509273 is a deficient number, since it is larger than the sum of its proper divisors (1).

804509273 is an equidigital number, since it uses as much as digits as its factorization.

804509273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 804509273 is about 28363.8726728210. The cubic root of 804509273 is about 930.0586824651.

The spelling of 804509273 in words is "eight hundred four million, five hundred nine thousand, two hundred seventy-three".