239228089 has 3 divisors (see below), whose sum is σ = 239243557. Its totient is φ = 239212622.

The previous prime is 239228027. The next prime is 239228111. The reversal of 239228089 is 980822932.

The square root of 239228089 is 15467.

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

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 239228089 - 2¹¹ = 239226041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239228009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7734 + ... + 23200.

Almost surely, 2^239228089 is an apocalyptic number.

239228089 is the 15467-th square number.

239228089 is the 7734-th centered octagonal number.

It is an amenable number.

239228089 is a deficient number, since it is larger than the sum of its proper divisors (15468).

239228089 is an frugal number, since it uses more digits than its factorization.

239228089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934 (or 15467 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The cubic root of 239228089 is about 620.7795336931.

The spelling of 239228089 in words is "two hundred thirty-nine million, two hundred twenty-eight thousand, eighty-nine".