330989 has 4 divisors (see below), whose sum is σ = 332160. Its totient is φ = 329820.

The previous prime is 330983. The next prime is 330997. The reversal of 330989 is 989033.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 989033 = 53 ⋅18661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 330989.

It is not an unprimeable number, because it can be changed into a prime (330983) 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, 134 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (83040).

2³³⁰⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

330989 is a deficient number, since it is larger than the sum of its proper divisors (1171).

330989 is an equidigital number, since it uses as much as digits as its factorization.

330989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 330989 is about 575.3164346688. The cubic root of 330989 is about 69.1731978801.

The spelling of 330989 in words is "three hundred thirty thousand, nine hundred eighty-nine".