264916789 has 2 divisors, whose sum is σ = 264916790. Its totient is φ = 264916788.

The previous prime is 264916787. The next prime is 264916801. The reversal of 264916789 is 987619462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258244900 + 6671889 = 16070^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 264916789 - 2¹ = 264916787 is a prime.

Together with 264916787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264916787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132458394 + 132458395.

It is an arithmetic number, because the mean of its divisors is an integer number (132458395).

Almost surely, 2^264916789 is an apocalyptic number.

It is an amenable number.

264916789 is a deficient number, since it is larger than the sum of its proper divisors (1).

264916789 is an equidigital number, since it uses as much as digits as its factorization.

264916789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 264916789 is about 16276.2645898867. The cubic root of 264916789 is about 642.2485919535.

The spelling of 264916789 in words is "two hundred sixty-four million, nine hundred sixteen thousand, seven hundred eighty-nine".