328959973 has 4 divisors (see below), whose sum is σ = 333466348. Its totient is φ = 324453600.

The previous prime is 328959907. The next prime is 328959989. The reversal of 328959973 is 379959823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379959823 = 59 ⋅6439997.

It can be written as a sum of positive squares in 2 ways, for example, as 96000804 + 232959169 = 9798^2 + 15263^2 .

It is a cyclic number.

It is not a de Polignac number, because 328959973 - 2¹³ = 328951781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328929973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253078 + ... + 2253223.

It is an arithmetic number, because the mean of its divisors is an integer number (83366587).

Almost surely, 2^328959973 is an apocalyptic number.

It is an amenable number.

328959973 is a deficient number, since it is larger than the sum of its proper divisors (4506375).

328959973 is an equidigital number, since it uses as much as digits as its factorization.

328959973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506374.

The product of its digits is 3674160, while the sum is 55.

The square root of 328959973 is about 18137.2537336831. The cubic root of 328959973 is about 690.3155967191.

The spelling of 328959973 in words is "three hundred twenty-eight million, nine hundred fifty-nine thousand, nine hundred seventy-three".