86818349 has 2 divisors, whose sum is σ = 86818350. Its totient is φ = 86818348.

The previous prime is 86818339. The next prime is 86818351. The reversal of 86818349 is 94381868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82937449 + 3880900 = 9107^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 86818349 - 2²⁰ = 85769773 is a prime.

Together with 86818351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86818339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43409174 + 43409175.

It is an arithmetic number, because the mean of its divisors is an integer number (43409175).

Almost surely, 2^86818349 is an apocalyptic number.

It is an amenable number.

86818349 is a deficient number, since it is larger than the sum of its proper divisors (1).

86818349 is an equidigital number, since it uses as much as digits as its factorization.

86818349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 47.

The square root of 86818349 is about 9317.6364492290. The cubic root of 86818349 is about 442.7961548590.

The spelling of 86818349 in words is "eighty-six million, eight hundred eighteen thousand, three hundred forty-nine".