146868289 has 2 divisors, whose sum is σ = 146868290. Its totient is φ = 146868288.

The previous prime is 146868283. The next prime is 146868313. The reversal of 146868289 is 982868641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 17363889 = 11380^2 + 4167^2 .

It is an emirp because it is prime and its reverse (982868641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146868289 - 2¹¹ = 146866241 is a prime.

It is not a weakly prime, because it can be changed into another prime (146868283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73434144 + 73434145.

It is an arithmetic number, because the mean of its divisors is an integer number (73434145).

Almost surely, 2^146868289 is an apocalyptic number.

It is an amenable number.

146868289 is a deficient number, since it is larger than the sum of its proper divisors (1).

146868289 is an equidigital number, since it uses as much as digits as its factorization.

146868289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327104, while the sum is 52.

The square root of 146868289 is about 12118.9227656587. The cubic root of 146868289 is about 527.6055376086.

The spelling of 146868289 in words is "one hundred forty-six million, eight hundred sixty-eight thousand, two hundred eighty-nine".