805219 has 2 divisors, whose sum is σ = 805220. Its totient is φ = 805218.

The previous prime is 805213. The next prime is 805223. The reversal of 805219 is 912508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805219 - 2⁵ = 805187 is a prime.

It is a super-2 number, since 2×805219² = 1296755275922, which contains 22 as substring.

It is equal to p₆₄₃₃₉ and since 805219 and 64339 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 805193 and 805202.

It is not a weakly prime, because it can be changed into another prime (805213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402609 + 402610.

It is an arithmetic number, because the mean of its divisors is an integer number (402610).

2⁸⁰⁵²¹⁹ is an apocalyptic number.

805219 is a deficient number, since it is larger than the sum of its proper divisors (1).

805219 is an equidigital number, since it uses as much as digits as its factorization.

805219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 805219 is about 897.3399578755. The cubic root of 805219 is about 93.0332097067.

It can be divided in two parts, 805 and 219, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 805219 in words is "eight hundred five thousand, two hundred nineteen".