189267289 has 4 divisors (see below), whose sum is σ = 189294820. Its totient is φ = 189239760.

The previous prime is 189267259. The next prime is 189267301. The reversal of 189267289 is 982762981.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 48441600 + 140825689 = 6960^2 + 11867^2 .

It is a cyclic number.

It is not a de Polignac number, because 189267289 - 2⁵ = 189267257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189267259) 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, 6199 + ... + 20419.

It is an arithmetic number, because the mean of its divisors is an integer number (47323705).

Almost surely, 2^189267289 is an apocalyptic number.

It is an amenable number.

189267289 is a deficient number, since it is larger than the sum of its proper divisors (27531).

189267289 is a wasteful number, since it uses less digits than its factorization.

189267289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27530.

The product of its digits is 870912, while the sum is 52.

The square root of 189267289 is about 13757.4448572400. Note that the first 3 decimals coincide. The cubic root of 189267289 is about 574.1497593915.

The spelling of 189267289 in words is "one hundred eighty-nine million, two hundred sixty-seven thousand, two hundred eighty-nine".