264889465 has 4 divisors (see below), whose sum is σ = 317867364. Its totient is φ = 211911568.

The previous prime is 264889453. The next prime is 264889477. The reversal of 264889465 is 564988462.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (264889453) and next prime (264889477).

It can be written as a sum of positive squares in 2 ways, for example, as 155226681 + 109662784 = 12459^2 + 10472^2 .

It is a cyclic number.

It is not a de Polignac number, because 264889465 - 2⁵ = 264889433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 26488942 + ... + 26488951.

It is an arithmetic number, because the mean of its divisors is an integer number (79466841).

Almost surely, 2^264889465 is an apocalyptic number.

It is an amenable number.

264889465 is a deficient number, since it is larger than the sum of its proper divisors (52977899).

264889465 is an equidigital number, since it uses as much as digits as its factorization.

264889465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977898.

The product of its digits is 3317760, while the sum is 52.

The square root of 264889465 is about 16275.4251864583. The cubic root of 264889465 is about 642.2265102979.

It can be divided in two parts, 26488 and 9465, that added together give a palindrome (35953).

The spelling of 264889465 in words is "two hundred sixty-four million, eight hundred eighty-nine thousand, four hundred sixty-five".