264979823 has 2 divisors, whose sum is σ = 264979824. Its totient is φ = 264979822.

The previous prime is 264979817. The next prime is 264979861. The reversal of 264979823 is 328979462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264979823 - 2¹⁰ = 264978799 is a prime.

It is a super-2 number, since 2×264979823² = 140428613194222658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264979223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132489911 + 132489912.

It is an arithmetic number, because the mean of its divisors is an integer number (132489912).

Almost surely, 2^264979823 is an apocalyptic number.

264979823 is a deficient number, since it is larger than the sum of its proper divisors (1).

264979823 is an equidigital number, since it uses as much as digits as its factorization.

264979823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 264979823 is about 16278.2008526741. The cubic root of 264979823 is about 642.2995265475.

The spelling of 264979823 in words is "two hundred sixty-four million, nine hundred seventy-nine thousand, eight hundred twenty-three".