189567239 has 4 divisors (see below), whose sum is σ = 189600960. Its totient is φ = 189533520.

The previous prime is 189567233. The next prime is 189567319. The reversal of 189567239 is 932765981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189567239 - 2⁴ = 189567223 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 (189567233) 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, 6167 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (47400240).

Almost surely, 2^189567239 is an apocalyptic number.

189567239 is a deficient number, since it is larger than the sum of its proper divisors (33721).

189567239 is an equidigital number, since it uses as much as digits as its factorization.

189567239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33720.

The product of its digits is 816480, while the sum is 50.

The square root of 189567239 is about 13768.3419117917. The cubic root of 189567239 is about 574.4529026788.

The spelling of 189567239 in words is "one hundred eighty-nine million, five hundred sixty-seven thousand, two hundred thirty-nine".