328888789 has 4 divisors (see below), whose sum is σ = 331962624. Its totient is φ = 325814956.

The previous prime is 328888787. The next prime is 328888801. The reversal of 328888789 is 987888823.

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: 987888823 = 349 ⋅2830627.

It is a cyclic number.

It is not a de Polignac number, because 328888789 - 2¹ = 328888787 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 (328888787) 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, 1536757 + ... + 1536970.

It is an arithmetic number, because the mean of its divisors is an integer number (82990656).

Almost surely, 2^328888789 is an apocalyptic number.

It is an amenable number.

328888789 is a deficient number, since it is larger than the sum of its proper divisors (3073835).

328888789 is a wasteful number, since it uses less digits than its factorization.

328888789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073834.

The product of its digits is 12386304, while the sum is 61.

The square root of 328888789 is about 18135.2912576556. The cubic root of 328888789 is about 690.2658004173.

The spelling of 328888789 in words is "three hundred twenty-eight million, eight hundred eighty-eight thousand, seven hundred eighty-nine".