808804819 has 2 divisors, whose sum is σ = 808804820. Its totient is φ = 808804818.

The previous prime is 808804783. The next prime is 808804823. The reversal of 808804819 is 918408808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 808804819 - 2⁷ = 808804691 is a prime.

It is a super-2 number, since 2×808804819² = 1308330470475245522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (808804879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404402409 + 404402410.

It is an arithmetic number, because the mean of its divisors is an integer number (404402410).

Almost surely, 2^808804819 is an apocalyptic number.

808804819 is a deficient number, since it is larger than the sum of its proper divisors (1).

808804819 is an equidigital number, since it uses as much as digits as its factorization.

808804819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 808804819 is about 28439.4940004213. The cubic root of 808804819 is about 931.7110439693.

The spelling of 808804819 in words is "eight hundred eight million, eight hundred four thousand, eight hundred nineteen".