328890489 has 4 divisors (see below), whose sum is σ = 438520656. Its totient is φ = 219260324.

The previous prime is 328890469. The next prime is 328890559. The reversal of 328890489 is 984098823.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328890489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328890469) 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, 54815079 + ... + 54815084.

It is an arithmetic number, because the mean of its divisors is an integer number (109630164).

Almost surely, 2^328890489 is an apocalyptic number.

It is an amenable number.

328890489 is a deficient number, since it is larger than the sum of its proper divisors (109630167).

328890489 is a wasteful number, since it uses less digits than its factorization.

328890489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109630166.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 328890489 is about 18135.3381275343. The cubic root of 328890489 is about 690.2669897249.

The spelling of 328890489 in words is "three hundred twenty-eight million, eight hundred ninety thousand, four hundred eighty-nine".