328950991 has 8 divisors (see below), whose sum is σ = 346404960. Its totient is φ = 311759712.

The previous prime is 328950983. The next prime is 328951001. The reversal of 328950991 is 199059823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328950991 - 2³ = 328950983 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 (328950961) 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 7 ways as a sum of consecutive naturals, for example, 63100 + ... + 68113.

It is an arithmetic number, because the mean of its divisors is an integer number (43300620).

Almost surely, 2^328950991 is an apocalyptic number.

328950991 is a deficient number, since it is larger than the sum of its proper divisors (17453969).

328950991 is a wasteful number, since it uses less digits than its factorization.

328950991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131345.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 328950991 is about 18137.0061200850. The cubic root of 328950991 is about 690.3093138158.

The spelling of 328950991 in words is "three hundred twenty-eight million, nine hundred fifty thousand, nine hundred ninety-one".