928238089 has 3 divisors (see below), whose sum is σ = 928268557. Its totient is φ = 928207622.

The previous prime is 928238057. The next prime is 928238099. The reversal of 928238089 is 980832829.

The square root of 928238089 is 30467.

It is a perfect power (a square), and thus also a powerful number.

928238089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 928238089 - 2⁵ = 928238057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (928238009) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15234 + ... + 45700.

Almost surely, 2^928238089 is an apocalyptic number.

928238089 is the 30467-th square number.

928238089 is the 15234-th centered octagonal number.

It is an amenable number.

928238089 is a deficient number, since it is larger than the sum of its proper divisors (30468).

928238089 is an frugal number, since it uses more digits than its factorization.

928238089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60934 (or 30467 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The cubic root of 928238089 is about 975.4832017346.

Multiplying 928238089 by its sum of digits (49), we get a square (45483666361 = 213269²).

The spelling of 928238089 in words is "nine hundred twenty-eight million, two hundred thirty-eight thousand, eighty-nine".