189679609 has 8 divisors (see below), whose sum is σ = 217138688. Its totient is φ = 162311040.

The previous prime is 189679583. The next prime is 189679619. The reversal of 189679609 is 906976981.

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 189679609 - 2⁷ = 189679481 is a prime.

It is a super-3 number, since 3×189679609³ (a number of 26 digits) contains 333 as substring.

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 189679609.

It is not an unprimeable number, because it can be changed into a prime (189679619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18072 + ... + 26569.

It is an arithmetic number, because the mean of its divisors is an integer number (27142336).

Almost surely, 2^189679609 is an apocalyptic number.

It is an amenable number.

189679609 is a deficient number, since it is larger than the sum of its proper divisors (27459079).

189679609 is an equidigital number, since it uses as much as digits as its factorization.

189679609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45255.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 189679609 is about 13772.4220455227. The cubic root of 189679609 is about 574.5663866375.

The spelling of 189679609 in words is "one hundred eighty-nine million, six hundred seventy-nine thousand, six hundred nine".