264144009 has 4 divisors (see below), whose sum is σ = 352192016. Its totient is φ = 176096004.

The previous prime is 264144007. The next prime is 264144019. The reversal of 264144009 is 900441462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 264144009 - 2¹ = 264144007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264144007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44023999 + ... + 44024004.

It is an arithmetic number, because the mean of its divisors is an integer number (88048004).

Almost surely, 2^264144009 is an apocalyptic number.

It is an amenable number.

264144009 is a deficient number, since it is larger than the sum of its proper divisors (88048007).

264144009 is an equidigital number, since it uses as much as digits as its factorization.

264144009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88048006.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 264144009 is about 16252.5077757250. The cubic root of 264144009 is about 641.6234896980.

The spelling of 264144009 in words is "two hundred sixty-four million, one hundred forty-four thousand, nine".