139208509441 has 8 divisors (see below), whose sum is σ = 144013953600. Its totient is φ = 134403408720.

The previous prime is 139208509423. The next prime is 139208509457. The reversal of 139208509441 is 144905802931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139208509441 is a prime.

It is a super-2 number, since 2×139208509441² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139208509391 and 139208509400.

It is not an unprimeable number, because it can be changed into a prime (139208509421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951346 + ... + 1087876.

It is an arithmetic number, because the mean of its divisors is an integer number (18001744200).

Almost surely, 2^139208509441 is an apocalyptic number.

It is an amenable number.

139208509441 is a deficient number, since it is larger than the sum of its proper divisors (4805444159).

139208509441 is a wasteful number, since it uses less digits than its factorization.

139208509441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171719.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 139208509441 in words is "one hundred thirty-nine billion, two hundred eight million, five hundred nine thousand, four hundred forty-one".