189432329 has 4 divisors (see below), whose sum is σ = 193837776. Its totient is φ = 185026884.

The previous prime is 189432323. The next prime is 189432349. The reversal of 189432329 is 923234981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189432329 - 2⁸ = 189432073 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189432323) 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, 2202659 + ... + 2202744.

It is an arithmetic number, because the mean of its divisors is an integer number (48459444).

Almost surely, 2^189432329 is an apocalyptic number.

It is an amenable number.

189432329 is a deficient number, since it is larger than the sum of its proper divisors (4405447).

189432329 is an equidigital number, since it uses as much as digits as its factorization.

189432329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405446.

The product of its digits is 93312, while the sum is 41.

The square root of 189432329 is about 13763.4417570606. The cubic root of 189432329 is about 574.3165960161.

The spelling of 189432329 in words is "one hundred eighty-nine million, four hundred thirty-two thousand, three hundred twenty-nine".