264540489 has 8 divisors (see below), whose sum is σ = 353440992. Its totient is φ = 176000160.

The previous prime is 264540467. The next prime is 264540499. The reversal of 264540489 is 984045462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264540489 - 2¹¹ = 264538441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264540489.

It is not an unprimeable number, because it can be changed into a prime (264540449) 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 in 7 ways as a sum of consecutive naturals, for example, 88324 + ... + 91269.

It is an arithmetic number, because the mean of its divisors is an integer number (44180124).

Almost surely, 2^264540489 is an apocalyptic number.

It is an amenable number.

264540489 is a deficient number, since it is larger than the sum of its proper divisors (88900503).

264540489 is a wasteful number, since it uses less digits than its factorization.

264540489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180087.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 264540489 is about 16264.7007042860. The cubic root of 264540489 is about 641.9443547039.

It can be divided in two parts, 2645 and 40489, that added together give a palindrome (43134).

The spelling of 264540489 in words is "two hundred sixty-four million, five hundred forty thousand, four hundred eighty-nine".