264513239 has 2 divisors, whose sum is σ = 264513240. Its totient is φ = 264513238.

The previous prime is 264513229. The next prime is 264513257. The reversal of 264513239 is 932315462.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264513239 is a prime.

It is a super-2 number, since 2×264513239² = 139934507212542242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 264513199 and 264513208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264513209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132256619 + 132256620.

It is an arithmetic number, because the mean of its divisors is an integer number (132256620).

Almost surely, 2^264513239 is an apocalyptic number.

264513239 is a deficient number, since it is larger than the sum of its proper divisors (1).

264513239 is an equidigital number, since it uses as much as digits as its factorization.

264513239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 264513239 is about 16263.8629790096. The cubic root of 264513239 is about 641.9223119731.

The spelling of 264513239 in words is "two hundred sixty-four million, five hundred thirteen thousand, two hundred thirty-nine".