1289484226 has 4 divisors (see below), whose sum is σ = 1934226342. Its totient is φ = 644742112.

The previous prime is 1289484199. The next prime is 1289484239. The reversal of 1289484226 is 6224849821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1183291201 + 106193025 = 34399^2 + 10305^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322371055 + ... + 322371058.

Almost surely, 2^1289484226 is an apocalyptic number.

1289484226 is a deficient number, since it is larger than the sum of its proper divisors (644742116).

1289484226 is an equidigital number, since it uses as much as digits as its factorization.

1289484226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644742115.

The product of its digits is 442368, while the sum is 46.

The square root of 1289484226 is about 35909.3891064719. The cubic root of 1289484226 is about 1088.4421327197.

The spelling of 1289484226 in words is "one billion, two hundred eighty-nine million, four hundred eighty-four thousand, two hundred twenty-six".