808305397 has 2 divisors, whose sum is σ = 808305398. Its totient is φ = 808305396.

The previous prime is 808305361. The next prime is 808305413. The reversal of 808305397 is 793503808.

It is a happy number.

808305397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674648676 + 133656721 = 25974^2 + 11561^2 .

It is a cyclic number.

It is not a de Polignac number, because 808305397 - 2⁷ = 808305269 is a prime.

It is a super-2 number, since 2×808305397² = 1306715229638655218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808305347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404152698 + 404152699.

It is an arithmetic number, because the mean of its divisors is an integer number (404152699).

Almost surely, 2^808305397 is an apocalyptic number.

It is an amenable number.

808305397 is a deficient number, since it is larger than the sum of its proper divisors (1).

808305397 is an equidigital number, since it uses as much as digits as its factorization.

808305397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 808305397 is about 28430.7122140829. The cubic root of 808305397 is about 931.5192330446.

The spelling of 808305397 in words is "eight hundred eight million, three hundred five thousand, three hundred ninety-seven".