1449187709 has 2 divisors, whose sum is σ = 1449187710. Its totient is φ = 1449187708.

The previous prime is 1449187687. The next prime is 1449187711. The reversal of 1449187709 is 9077819441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1292186809 + 157000900 = 35947^2 + 12530^2 .

It is an emirp because it is prime and its reverse (9077819441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1449187709 - 2¹² = 1449183613 is a prime.

Together with 1449187711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1449187409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724593854 + 724593855.

It is an arithmetic number, because the mean of its divisors is an integer number (724593855).

Almost surely, 2^1449187709 is an apocalyptic number.

It is an amenable number.

1449187709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449187709 is an equidigital number, since it uses as much as digits as its factorization.

1449187709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 1449187709 is about 38068.1981317740. The cubic root of 1449187709 is about 1131.6398018768.

The spelling of 1449187709 in words is "one billion, four hundred forty-nine million, one hundred eighty-seven thousand, seven hundred nine".