1229609609 has 8 divisors (see below), whose sum is σ = 1303034760. Its totient is φ = 1156306176.

The previous prime is 1229609597. The next prime is 1229609621. The reversal of 1229609609 is 9069069221.

It is an interprime number because it is at equal distance from previous prime (1229609597) and next prime (1229609621).

It can be written as a sum of positive squares in 4 ways, for example, as 84125584 + 1145484025 = 9172^2 + 33845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229609609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229609609.

It is not an unprimeable number, because it can be changed into a prime (1229609659) 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 7 ways as a sum of consecutive naturals, for example, 9194 + ... + 50435.

It is an arithmetic number, because the mean of its divisors is an integer number (162879345).

Almost surely, 2^1229609609 is an apocalyptic number.

It is an amenable number.

1229609609 is a deficient number, since it is larger than the sum of its proper divisors (73425151).

1229609609 is a wasteful number, since it uses less digits than its factorization.

1229609609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60859.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 1229609609 is about 35065.7897244594. The cubic root of 1229609609 is about 1071.3279024037.

The spelling of 1229609609 in words is "one billion, two hundred twenty-nine million, six hundred nine thousand, six hundred nine".