808438819 has 2 divisors, whose sum is σ = 808438820. Its totient is φ = 808438818.

The previous prime is 808438769. The next prime is 808438823. The reversal of 808438819 is 918834808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 808438819 - 2⁷ = 808438691 is a prime.

It is a super-2 number, since 2×808438819² = 1307146648132229522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (808438849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404219409 + 404219410.

It is an arithmetic number, because the mean of its divisors is an integer number (404219410).

Almost surely, 2^808438819 is an apocalyptic number.

808438819 is a deficient number, since it is larger than the sum of its proper divisors (1).

808438819 is an equidigital number, since it uses as much as digits as its factorization.

808438819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 808438819 is about 28433.0585586567. The cubic root of 808438819 is about 931.5704836082.

The spelling of 808438819 in words is "eight hundred eight million, four hundred thirty-eight thousand, eight hundred nineteen".