328758889 has 4 divisors (see below), whose sum is σ = 330317200. Its totient is φ = 327200580.

The previous prime is 328758887. The next prime is 328758907. The reversal of 328758889 is 988857823.

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 an emirpimes, since its reverse is a distinct semiprime: 988857823 = 131 ⋅7548533.

It is a cyclic number.

It is not a de Polignac number, because 328758889 - 2¹ = 328758887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328758887) 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, 778839 + ... + 779260.

It is an arithmetic number, because the mean of its divisors is an integer number (82579300).

Almost surely, 2^328758889 is an apocalyptic number.

It is an amenable number.

328758889 is a deficient number, since it is larger than the sum of its proper divisors (1558311).

328758889 is a wasteful number, since it uses less digits than its factorization.

328758889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558310.

The product of its digits is 7741440, while the sum is 58.

The square root of 328758889 is about 18131.7094891794. The cubic root of 328758889 is about 690.1749111988.

The spelling of 328758889 in words is "three hundred twenty-eight million, seven hundred fifty-eight thousand, eight hundred eighty-nine".