1339381489 has 2 divisors, whose sum is σ = 1339381490. Its totient is φ = 1339381488.

The previous prime is 1339381487. The next prime is 1339381507. The reversal of 1339381489 is 9841839331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253726464 + 85655025 = 35408^2 + 9255^2 .

It is an emirp because it is prime and its reverse (9841839331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1339381489 - 2¹ = 1339381487 is a prime.

Together with 1339381487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1339381487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669690744 + 669690745.

It is an arithmetic number, because the mean of its divisors is an integer number (669690745).

Almost surely, 2^1339381489 is an apocalyptic number.

It is an amenable number.

1339381489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339381489 is an equidigital number, since it uses as much as digits as its factorization.

1339381489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 1339381489 is about 36597.5612438862. The cubic root of 1339381489 is about 1102.3041204307.

The spelling of 1339381489 in words is "one billion, three hundred thirty-nine million, three hundred eighty-one thousand, four hundred eighty-nine".