1208208089 has 4 divisors (see below), whose sum is σ = 1318045200. Its totient is φ = 1098370980.

The previous prime is 1208208083. The next prime is 1208208103. The reversal of 1208208089 is 9808028021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9808028021 = 11 ⋅891638911.

It is a cyclic number.

It is not a de Polignac number, because 1208208089 - 2⁴ = 1208208073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208208083) 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 3 ways as a sum of consecutive naturals, for example, 54918539 + ... + 54918560.

It is an arithmetic number, because the mean of its divisors is an integer number (329511300).

Almost surely, 2^1208208089 is an apocalyptic number.

It is an amenable number.

1208208089 is a deficient number, since it is larger than the sum of its proper divisors (109837111).

1208208089 is a wasteful number, since it uses less digits than its factorization.

1208208089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109837110.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1208208089 is about 34759.2878091597. The cubic root of 1208208089 is about 1065.0759536446.

The spelling of 1208208089 in words is "one billion, two hundred eight million, two hundred eight thousand, eighty-nine".