1411991309 has 2 divisors, whose sum is σ = 1411991310. Its totient is φ = 1411991308.

The previous prime is 1411991303. The next prime is 1411991359. The reversal of 1411991309 is 9031991141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1053002500 + 358988809 = 32450^2 + 18947^2 .

It is a cyclic number.

It is not a de Polignac number, because 1411991309 - 2⁴ = 1411991293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1411991303) 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, 705995654 + 705995655.

It is an arithmetic number, because the mean of its divisors is an integer number (705995655).

Almost surely, 2^1411991309 is an apocalyptic number.

It is an amenable number.

1411991309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1411991309 is an equidigital number, since it uses as much as digits as its factorization.

1411991309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 1411991309 is about 37576.4728121201. The cubic root of 1411991309 is about 1121.8738055289.

The spelling of 1411991309 in words is "one billion, four hundred eleven million, nine hundred ninety-one thousand, three hundred nine".