139144719505444 has 9 divisors (see below), whose sum is σ = 243503300420401. Its totient is φ = 69572347956760.

The previous prime is 139144719505433. The next prime is 139144719505471. The reversal of 139144719505444 is 444505917441931.

The square root of 139144719505444 is 11795962.

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

It can be written as a sum of positive squares in only one way, i.e., 92947685519844 + 46197033985600 = 9640938^2 + 6796840^2 .

It is a super-2 number, since 2×139144719505444² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20642934 + ... + 26540914.

Almost surely, 2^{139144719505444} is an apocalyptic number.

139144719505444 is the 11795962-nd square number.

It is an amenable number.

139144719505444 is a deficient number, since it is larger than the sum of its proper divisors (104358580914957).

139144719505444 is an frugal number, since it uses more digits than its factorization.

139144719505444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11795966 (or 5897983 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 139144719505444 in words is "one hundred thirty-nine trillion, one hundred forty-four billion, seven hundred nineteen million, five hundred five thousand, four hundred forty-four".