1449469789 has 2 divisors, whose sum is σ = 1449469790. Its totient is φ = 1449469788.

The previous prime is 1449469771. The next prime is 1449469831. The reversal of 1449469789 is 9879649441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 892037689 + 557432100 = 29867^2 + 23610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1449469789 - 2⁹ = 1449469277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1449464789) 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, 724734894 + 724734895.

It is an arithmetic number, because the mean of its divisors is an integer number (724734895).

Almost surely, 2^1449469789 is an apocalyptic number.

It is an amenable number.

1449469789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449469789 is an equidigital number, since it uses as much as digits as its factorization.

1449469789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 61.

The square root of 1449469789 is about 38071.9028812588. The cubic root of 1449469789 is about 1131.7132205339.

The spelling of 1449469789 in words is "one billion, four hundred forty-nine million, four hundred sixty-nine thousand, seven hundred eighty-nine".