189620239 has 4 divisors (see below), whose sum is σ = 194030056. Its totient is φ = 185210424.

The previous prime is 189620177. The next prime is 189620243. The reversal of 189620239 is 932026981.

It is a happy number.

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 189620239 - 2²⁷ = 55402511 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 (189620279) 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 3 ways as a sum of consecutive naturals, for example, 2204844 + ... + 2204929.

It is an arithmetic number, because the mean of its divisors is an integer number (48507514).

Almost surely, 2^189620239 is an apocalyptic number.

189620239 is a deficient number, since it is larger than the sum of its proper divisors (4409817).

189620239 is an equidigital number, since it uses as much as digits as its factorization.

189620239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409816.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 189620239 is about 13770.2664825340. The cubic root of 189620239 is about 574.5064336705.

The spelling of 189620239 in words is "one hundred eighty-nine million, six hundred twenty thousand, two hundred thirty-nine".