1189077289 has 3 divisors (see below), whose sum is σ = 1189111773. Its totient is φ = 1189042806.

The previous prime is 1189077283. The next prime is 1189077293. The reversal of 1189077289 is 9827709811.

The square root of 1189077289 is 34483.

It is a perfect power (a square), and thus also a powerful number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9827709811 = 53 ⋅185428487.

It is not a de Polignac number, because 1189077289 - 2¹⁷ = 1188946217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189077283) 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 2 ways as a sum of consecutive naturals, for example, 17242 + ... + 51724.

It is an arithmetic number, because the mean of its divisors is an integer number (396370591).

Almost surely, 2^1189077289 is an apocalyptic number.

1189077289 is the 34483-rd square number.

1189077289 is the 17242-nd centered octagonal number.

It is an amenable number.

1189077289 is a deficient number, since it is larger than the sum of its proper divisors (34484).

1189077289 is an frugal number, since it uses more digits than its factorization.

1189077289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68966 (or 34483 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 52.

The cubic root of 1189077289 is about 1059.4245390164.

The spelling of 1189077289 in words is "one billion, one hundred eighty-nine million, seventy-seven thousand, two hundred eighty-nine".