1289244963 has 16 divisors (see below), whose sum is σ = 1862441856. Its totient is φ = 790124160.

The previous prime is 1289244949. The next prime is 1289244973. The reversal of 1289244963 is 3694429821.

It is not a de Polignac number, because 1289244963 - 2⁶ = 1289244899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1289244973) 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 15 ways as a sum of consecutive naturals, for example, 291753 + ... + 296138.

It is an arithmetic number, because the mean of its divisors is an integer number (116402616).

Almost surely, 2^1289244963 is an apocalyptic number.

1289244963 is a deficient number, since it is larger than the sum of its proper divisors (573196893).

1289244963 is a wasteful number, since it uses less digits than its factorization.

1289244963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587954.

The product of its digits is 746496, while the sum is 48.

The square root of 1289244963 is about 35906.0574694577. The cubic root of 1289244963 is about 1088.3748086342.

The spelling of 1289244963 in words is "one billion, two hundred eighty-nine million, two hundred forty-four thousand, nine hundred sixty-three".