1229059649 has 4 divisors (see below), whose sum is σ = 1230543060. Its totient is φ = 1227576240.

The previous prime is 1229059613. The next prime is 1229059679. The reversal of 1229059649 is 9469509221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 271590400 + 957469249 = 16480^2 + 30943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229059649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229059679) 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, 740462 + ... + 742119.

It is an arithmetic number, because the mean of its divisors is an integer number (307635765).

Almost surely, 2^1229059649 is an apocalyptic number.

It is an amenable number.

1229059649 is a deficient number, since it is larger than the sum of its proper divisors (1483411).

1229059649 is an equidigital number, since it uses as much as digits as its factorization.

1229059649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483410.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 1229059649 is about 35057.9470163328. The cubic root of 1229059649 is about 1071.1681564834.

The spelling of 1229059649 in words is "one billion, two hundred twenty-nine million, fifty-nine thousand, six hundred forty-nine".