1439071349769 has 9 divisors (see below), whose sum is σ = 2078663814669. Its totient is φ = 959378500620.

The previous prime is 1439071349761. The next prime is 1439071349803. The reversal of 1439071349769 is 9679431709341.

The square root of 1439071349769 is 1199613.

It is a perfect power (a square), and thus also a powerful number.

1439071349769 is a `hidden beast` number, since 1 + 4 + 390 + 71 + 34 + 97 + 69 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1439071349769 - 2³ = 1439071349761 is a prime.

It is a super-2 number, since 2×1439071349769² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1439071349761) 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 8 ways as a sum of consecutive naturals, for example, 3398904 + ... + 3798774.

Almost surely, 2^{1439071349769} is an apocalyptic number.

1439071349769 is the 1199613-rd square number.

1439071349769 is the 599807-th centered octagonal number.

It is an amenable number.

1439071349769 is a deficient number, since it is larger than the sum of its proper divisors (639592464900).

1439071349769 is an frugal number, since it uses more digits than its factorization.

1439071349769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799748 (or 399874 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 1439071349769 in words is "one trillion, four hundred thirty-nine billion, seventy-one million, three hundred forty-nine thousand, seven hundred sixty-nine".