189008869 has 8 divisors (see below), whose sum is σ = 216164160. Its totient is φ = 161892096.

The previous prime is 189008849. The next prime is 189008879. The reversal of 189008869 is 968800981.

It is a happy number.

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 189008869 - 2⁷ = 189008741 is a prime.

It is a super-2 number, since 2×189008869² = 71448705121318322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189008819) 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 7 ways as a sum of consecutive naturals, for example, 1797 + ... + 19525.

It is an arithmetic number, because the mean of its divisors is an integer number (27020520).

Almost surely, 2^189008869 is an apocalyptic number.

It is an amenable number.

189008869 is a deficient number, since it is larger than the sum of its proper divisors (27155291).

189008869 is a wasteful number, since it uses less digits than its factorization.

189008869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19259.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 189008869 is about 13748.0496434949. The cubic root of 189008869 is about 573.8883312980. Note that the first 3 decimals are identical.

The spelling of 189008869 in words is "one hundred eighty-nine million, eight thousand, eight hundred sixty-nine".