264393319 has 4 divisors (see below), whose sum is σ = 273510360. Its totient is φ = 255276280.

The previous prime is 264393317. The next prime is 264393331. The reversal of 264393319 is 913393462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913393462 = 2 ⋅456696731.

It is a cyclic number.

It is not a de Polignac number, because 264393319 - 2¹ = 264393317 is a prime.

It is a super-2 number, since 2×264393319² = 139807654263671522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264393313) 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, 4558477 + ... + 4558534.

It is an arithmetic number, because the mean of its divisors is an integer number (68377590).

Almost surely, 2^264393319 is an apocalyptic number.

264393319 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

264393319 is a deficient number, since it is larger than the sum of its proper divisors (9117041).

264393319 is an equidigital number, since it uses as much as digits as its factorization.

264393319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117040.

The product of its digits is 104976, while the sum is 40.

The square root of 264393319 is about 16260.1758600576. The cubic root of 264393319 is about 641.8252897849.

The spelling of 264393319 in words is "two hundred sixty-four million, three hundred ninety-three thousand, three hundred nineteen".