1439089749505 has 4 divisors (see below), whose sum is σ = 1726907699412. Its totient is φ = 1151271799600.

The previous prime is 1439089749469. The next prime is 1439089749509. The reversal of 1439089749505 is 5059479809341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960386280049 + 478703469456 = 979993^2 + 691884^2 .

It is not a de Polignac number, because 1439089749505 - 2²⁹ = 1438552878593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439089749509) 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 in 3 ways as a sum of consecutive naturals, for example, 143908974946 + ... + 143908974955.

It is an arithmetic number, because the mean of its divisors is an integer number (431726924853).

Almost surely, 2^{1439089749505} is an apocalyptic number.

It is an amenable number.

1439089749505 is a deficient number, since it is larger than the sum of its proper divisors (287817949907).

1439089749505 is an equidigital number, since it uses as much as digits as its factorization.

1439089749505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287817949906.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 1439089749505 in words is "one trillion, four hundred thirty-nine billion, eighty-nine million, seven hundred forty-nine thousand, five hundred five".