146646289 has 2 divisors, whose sum is σ = 146646290. Its totient is φ = 146646288.

The previous prime is 146646271. The next prime is 146646319. The reversal of 146646289 is 982646641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135140625 + 11505664 = 11625^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 146646289 - 2¹³ = 146638097 is a prime.

It is not a weakly prime, because it can be changed into another prime (146640289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73323144 + 73323145.

It is an arithmetic number, because the mean of its divisors is an integer number (73323145).

Almost surely, 2^146646289 is an apocalyptic number.

It is an amenable number.

146646289 is a deficient number, since it is larger than the sum of its proper divisors (1).

146646289 is an equidigital number, since it uses as much as digits as its factorization.

146646289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 146646289 is about 12109.7600719420. The cubic root of 146646289 is about 527.3395680218.

The spelling of 146646289 in words is "one hundred forty-six million, six hundred forty-six thousand, two hundred eighty-nine".