264040279 has 4 divisors (see below), whose sum is σ = 264348520. Its totient is φ = 263732040.

The previous prime is 264040247. The next prime is 264040291. The reversal of 264040279 is 972040462.

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

It is a cyclic number.

It is not a de Polignac number, because 264040279 - 2⁵ = 264040247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264041279) 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, 152832 + ... + 154549.

It is an arithmetic number, because the mean of its divisors is an integer number (66087130).

Almost surely, 2^264040279 is an apocalyptic number.

264040279 is a deficient number, since it is larger than the sum of its proper divisors (308241).

264040279 is an equidigital number, since it uses as much as digits as its factorization.

264040279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308240.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 264040279 is about 16249.3162625386. The cubic root of 264040279 is about 641.5394896621.

The spelling of 264040279 in words is "two hundred sixty-four million, forty thousand, two hundred seventy-nine".