146309 has 2 divisors, whose sum is σ = 146310. Its totient is φ = 146308.

The previous prime is 146299. The next prime is 146317. The reversal of 146309 is 903641.

146309 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., 136900 + 9409 = 370^2 + 97^2 .

It is an emirp because it is prime and its reverse (903641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73154 + 73155.

It is an arithmetic number, because the mean of its divisors is an integer number (73155).

2¹⁴⁶³⁰⁹ is an apocalyptic number.

It is an amenable number.

146309 is a deficient number, since it is larger than the sum of its proper divisors (1).

146309 is an equidigital number, since it uses as much as digits as its factorization.

146309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 146309 is about 382.5035947543. The cubic root of 146309 is about 52.6934960954.

The spelling of 146309 in words is "one hundred forty-six thousand, three hundred nine".