264839 has 2 divisors, whose sum is σ = 264840. Its totient is φ = 264838.

The previous prime is 264829. The next prime is 264871. The reversal of 264839 is 938462.

It is an a-pointer prime, because the next prime (264871) can be obtained adding 264839 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264839 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132419 + 132420.

It is an arithmetic number, because the mean of its divisors is an integer number (132420).

2²⁶⁴⁸³⁹ is an apocalyptic number.

264839 is a deficient number, since it is larger than the sum of its proper divisors (1).

264839 is an equidigital number, since it uses as much as digits as its factorization.

264839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 264839 is about 514.6251062667. The cubic root of 264839 is about 64.2185723450.

The spelling of 264839 in words is "two hundred sixty-four thousand, eight hundred thirty-nine".