264523439 has 4 divisors (see below), whose sum is σ = 265076160. Its totient is φ = 263970720.

The previous prime is 264523433. The next prime is 264523459. The reversal of 264523439 is 934325462.

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 264523439 - 2⁴ = 264523423 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 (264523433) 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 in 3 ways as a sum of consecutive naturals, for example, 275642 + ... + 276599.

It is an arithmetic number, because the mean of its divisors is an integer number (66269040).

Almost surely, 2^264523439 is an apocalyptic number.

264523439 is a deficient number, since it is larger than the sum of its proper divisors (552721).

264523439 is an equidigital number, since it uses as much as digits as its factorization.

264523439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552720.

The product of its digits is 155520, while the sum is 38.

The square root of 264523439 is about 16264.1765546246. The cubic root of 264523439 is about 641.9305630074.

The spelling of 264523439 in words is "two hundred sixty-four million, five hundred twenty-three thousand, four hundred thirty-nine".