945985289 has 2 divisors, whose sum is σ = 945985290. Its totient is φ = 945985288.

The previous prime is 945985283. The next prime is 945985297. The reversal of 945985289 is 982589549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603439225 + 342546064 = 24565^2 + 18508^2 .

It is a cyclic number.

It is not a de Polignac number, because 945985289 - 2¹⁶ = 945919753 is a prime.

It is not a weakly prime, because it can be changed into another prime (945985283) 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, 472992644 + 472992645.

It is an arithmetic number, because the mean of its divisors is an integer number (472992645).

Almost surely, 2^945985289 is an apocalyptic number.

It is an amenable number.

945985289 is a deficient number, since it is larger than the sum of its proper divisors (1).

945985289 is an equidigital number, since it uses as much as digits as its factorization.

945985289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 59.

The square root of 945985289 is about 30756.8738495966. The cubic root of 945985289 is about 981.6608270444.

The spelling of 945985289 in words is "nine hundred forty-five million, nine hundred eighty-five thousand, two hundred eighty-nine".