1229613839 has 2 divisors, whose sum is σ = 1229613840. Its totient is φ = 1229613838.

The previous prime is 1229613817. The next prime is 1229613841. The reversal of 1229613839 is 9383169221.

It is a strong prime.

It is an emirp because it is prime and its reverse (9383169221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1229613839 - 2²⁴ = 1212836623 is a prime.

Together with 1229613841, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1229613839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229610839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614806919 + 614806920.

It is an arithmetic number, because the mean of its divisors is an integer number (614806920).

Almost surely, 2^1229613839 is an apocalyptic number.

1229613839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229613839 is an equidigital number, since it uses as much as digits as its factorization.

1229613839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 1229613839 is about 35065.8500396041. The cubic root of 1229613839 is about 1071.3291308998.

The spelling of 1229613839 in words is "one billion, two hundred twenty-nine million, six hundred thirteen thousand, eight hundred thirty-nine".