1349276309 has 2 divisors, whose sum is σ = 1349276310. Its totient is φ = 1349276308.

The previous prime is 1349276297. The next prime is 1349276311. The reversal of 1349276309 is 9036729431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1082607409 + 266668900 = 32903^2 + 16330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349276309 - 2²⁸ = 1080840853 is a prime.

Together with 1349276311, 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 1349276309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1349276909) 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 as a sum of consecutive naturals, namely, 674638154 + 674638155.

It is an arithmetic number, because the mean of its divisors is an integer number (674638155).

Almost surely, 2^1349276309 is an apocalyptic number.

It is an amenable number.

1349276309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349276309 is an equidigital number, since it uses as much as digits as its factorization.

1349276309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 1349276309 is about 36732.4966344516. The cubic root of 1349276309 is about 1105.0119253710.

The spelling of 1349276309 in words is "one billion, three hundred forty-nine million, two hundred seventy-six thousand, three hundred nine".