86446289 has 2 divisors, whose sum is σ = 86446290. Its totient is φ = 86446288.

The previous prime is 86446279. The next prime is 86446291. The reversal of 86446289 is 98264468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 28944400 = 7583^2 + 5380^2 .

It is a cyclic number.

It is not a de Polignac number, because 86446289 - 2¹² = 86442193 is a prime.

It is a Sophie Germain prime.

Together with 86446291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86446249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43223144 + 43223145.

It is an arithmetic number, because the mean of its divisors is an integer number (43223145).

Almost surely, 2^86446289 is an apocalyptic number.

It is an amenable number.

86446289 is a deficient number, since it is larger than the sum of its proper divisors (1).

86446289 is an equidigital number, since it uses as much as digits as its factorization.

86446289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 47.

The square root of 86446289 is about 9297.6496492393. The cubic root of 86446289 is about 442.1627148781.

The spelling of 86446289 in words is "eighty-six million, four hundred forty-six thousand, two hundred eighty-nine".