808546397 has 2 divisors, whose sum is σ = 808546398. Its totient is φ = 808546396.

The previous prime is 808546391. The next prime is 808546421. The reversal of 808546397 is 793645808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804629956 + 3916441 = 28366^2 + 1979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808546397 is a prime.

It is a super-2 number, since 2×808546397² = 1307494552203363218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808546391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404273198 + 404273199.

It is an arithmetic number, because the mean of its divisors is an integer number (404273199).

Almost surely, 2^808546397 is an apocalyptic number.

It is an amenable number.

808546397 is a deficient number, since it is larger than the sum of its proper divisors (1).

808546397 is an equidigital number, since it uses as much as digits as its factorization.

808546397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 808546397 is about 28434.9502725080. The cubic root of 808546397 is about 931.6118027706.

It can be divided in two parts, 8085 and 46397, that multiplied together give a triangular number (375119745 = T₂₇₃₉₀).

The spelling of 808546397 in words is "eight hundred eight million, five hundred forty-six thousand, three hundred ninety-seven".