328393769 has 4 divisors (see below), whose sum is σ = 358247760. Its totient is φ = 298539780.

The previous prime is 328393729. The next prime is 328393781. The reversal of 328393769 is 967393823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 328393769 - 2¹⁶ = 328328233 is a prime.

It is a super-2 number, since 2×328393769² = 215684935036050722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328393729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14926979 + ... + 14927000.

It is an arithmetic number, because the mean of its divisors is an integer number (89561940).

Almost surely, 2^328393769 is an apocalyptic number.

It is an amenable number.

328393769 is a deficient number, since it is larger than the sum of its proper divisors (29853991).

328393769 is a wasteful number, since it uses less digits than its factorization.

328393769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29853990.

The product of its digits is 1469664, while the sum is 50.

The square root of 328393769 is about 18121.6381433909. The cubic root of 328393769 is about 689.9193135365.

The spelling of 328393769 in words is "three hundred twenty-eight million, three hundred ninety-three thousand, seven hundred sixty-nine".