189244889 has 8 divisors (see below), whose sum is σ = 197987328. Its totient is φ = 180699040.

The previous prime is 189244877. The next prime is 189244903. The reversal of 189244889 is 988442981.

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 189244889 - 2²⁰ = 188196313 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 189244889.

It is not an unprimeable number, because it can be changed into a prime (189249889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47177 + ... + 51030.

It is an arithmetic number, because the mean of its divisors is an integer number (24748416).

Almost surely, 2^189244889 is an apocalyptic number.

It is an amenable number.

189244889 is a deficient number, since it is larger than the sum of its proper divisors (8742439).

189244889 is an equidigital number, since it uses as much as digits as its factorization.

189244889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98295.

The product of its digits is 1327104, while the sum is 53.

The square root of 189244889 is about 13756.6307284887. The cubic root of 189244889 is about 574.1271080711.

The spelling of 189244889 in words is "one hundred eighty-nine million, two hundred forty-four thousand, eight hundred eighty-nine".