264378329 has 4 divisors (see below), whose sum is σ = 264416676. Its totient is φ = 264339984.

The previous prime is 264378287. The next prime is 264378347. The reversal of 264378329 is 923873462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171217225 + 93161104 = 13085^2 + 9652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264378329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264378329.

It is not an unprimeable number, because it can be changed into a prime (264378349) 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, 5654 + ... + 23679.

It is an arithmetic number, because the mean of its divisors is an integer number (66104169).

Almost surely, 2^264378329 is an apocalyptic number.

It is an amenable number.

264378329 is a deficient number, since it is larger than the sum of its proper divisors (38347).

264378329 is an equidigital number, since it uses as much as digits as its factorization.

264378329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38346.

The product of its digits is 435456, while the sum is 44.

The square root of 264378329 is about 16259.7149113999. The cubic root of 264378329 is about 641.8131599488.

The spelling of 264378329 in words is "two hundred sixty-four million, three hundred seventy-eight thousand, three hundred twenty-nine".