328769249 has 4 divisors (see below), whose sum is σ = 329258436. Its totient is φ = 328280064.

The previous prime is 328769227. The next prime is 328769267. The reversal of 328769249 is 942967823.

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 237375649 + 91393600 = 15407^2 + 9560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328769249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328769197 and 328769206.

It is not an unprimeable number, because it can be changed into a prime (328769219) 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, 243584 + ... + 244929.

It is an arithmetic number, because the mean of its divisors is an integer number (82314609).

Almost surely, 2^328769249 is an apocalyptic number.

It is an amenable number.

328769249 is a deficient number, since it is larger than the sum of its proper divisors (489187).

328769249 is an equidigital number, since it uses as much as digits as its factorization.

328769249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489186.

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

The square root of 328769249 is about 18131.9951742769. The cubic root of 328769249 is about 690.1821608248.

The spelling of 328769249 in words is "three hundred twenty-eight million, seven hundred sixty-nine thousand, two hundred forty-nine".