819473 has 2 divisors, whose sum is σ = 819474. Its totient is φ = 819472.

The previous prime is 819463. The next prime is 819487. The reversal of 819473 is 374918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753424 + 66049 = 868^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 819473 - 2⁴ = 819457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (819443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409736 + 409737.

It is an arithmetic number, because the mean of its divisors is an integer number (409737).

2⁸¹⁹⁴⁷³ is an apocalyptic number.

It is an amenable number.

819473 is a deficient number, since it is larger than the sum of its proper divisors (1).

819473 is an equidigital number, since it uses as much as digits as its factorization.

819473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 819473 is about 905.2474799744. The cubic root of 819473 is about 93.5789604377.

The spelling of 819473 in words is "eight hundred nineteen thousand, four hundred seventy-three".