189529939 has 8 divisors (see below), whose sum is σ = 200195072. Its totient is φ = 179149320.

The previous prime is 189529933. The next prime is 189529943. The reversal of 189529939 is 939925981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189529939 - 2²⁵ = 155975507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189529939.

It is not an unprimeable number, because it can be changed into a prime (189529933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69759 + ... + 72424.

It is an arithmetic number, because the mean of its divisors is an integer number (25024384).

Almost surely, 2^189529939 is an apocalyptic number.

189529939 is a deficient number, since it is larger than the sum of its proper divisors (10665133).

189529939 is a wasteful number, since it uses less digits than its factorization.

189529939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142257.

The product of its digits is 1574640, while the sum is 55.

The square root of 189529939 is about 13766.9872884375. The cubic root of 189529939 is about 574.4152229987.

The spelling of 189529939 in words is "one hundred eighty-nine million, five hundred twenty-nine thousand, nine hundred thirty-nine".