264002489 has 2 divisors, whose sum is σ = 264002490. Its totient is φ = 264002488.

The previous prime is 264002477. The next prime is 264002611. The reversal of 264002489 is 984200462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155426089 + 108576400 = 12467^2 + 10420^2 .

It is a cyclic number.

It is not a de Polignac number, because 264002489 - 2²⁰ = 262953913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (264002419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132001244 + 132001245.

It is an arithmetic number, because the mean of its divisors is an integer number (132001245).

Almost surely, 2^264002489 is an apocalyptic number.

It is an amenable number.

264002489 is a deficient number, since it is larger than the sum of its proper divisors (1).

264002489 is an equidigital number, since it uses as much as digits as its factorization.

264002489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 264002489 is about 16248.1534027717. The cubic root of 264002489 is about 641.5088820416.

The spelling of 264002489 in words is "two hundred sixty-four million, two thousand, four hundred eighty-nine".