1439209858349 has 2 divisors, whose sum is σ = 1439209858350. Its totient is φ = 1439209858348.

The previous prime is 1439209858337. The next prime is 1439209858369. The reversal of 1439209858349 is 9438589029341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813030429124 + 626179429225 = 901682^2 + 791315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439209858349 - 2¹² = 1439209854253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1439209858369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719604929174 + 719604929175.

It is an arithmetic number, because the mean of its divisors is an integer number (719604929175).

Almost surely, 2^{1439209858349} is an apocalyptic number.

It is an amenable number.

1439209858349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439209858349 is an equidigital number, since it uses as much as digits as its factorization.

1439209858349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 1439209858349 in words is "one trillion, four hundred thirty-nine billion, two hundred nine million, eight hundred fifty-eight thousand, three hundred forty-nine".