146805289 has 2 divisors, whose sum is σ = 146805290. Its totient is φ = 146805288.

The previous prime is 146805277. The next prime is 146805293. The reversal of 146805289 is 982508641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78907689 + 67897600 = 8883^2 + 8240^2 .

It is a cyclic number.

It is not a de Polignac number, because 146805289 - 2⁷ = 146805161 is a prime.

It is not a weakly prime, because it can be changed into another prime (146805089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73402644 + 73402645.

It is an arithmetic number, because the mean of its divisors is an integer number (73402645).

Almost surely, 2^146805289 is an apocalyptic number.

It is an amenable number.

146805289 is a deficient number, since it is larger than the sum of its proper divisors (1).

146805289 is an equidigital number, since it uses as much as digits as its factorization.

146805289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 146805289 is about 12116.3232459356. The cubic root of 146805289 is about 527.5300870061.

The spelling of 146805289 in words is "one hundred forty-six million, eight hundred five thousand, two hundred eighty-nine".