139025013889 has 4 divisors (see below), whose sum is σ = 139526909524. Its totient is φ = 138523118256.

The previous prime is 139025013863. The next prime is 139025013899. The reversal of 139025013889 is 988310520931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988310520931 = 709 ⋅1393949959.

It can be written as a sum of positive squares in 2 ways, for example, as 76032547600 + 62992466289 = 275740^2 + 250983^2 .

It is a cyclic number.

It is not a de Polignac number, because 139025013889 - 2⁷ = 139025013761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139025013839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250947402 + ... + 250947955.

It is an arithmetic number, because the mean of its divisors is an integer number (34881727381).

Almost surely, 2^139025013889 is an apocalyptic number.

It is an amenable number.

139025013889 is a deficient number, since it is larger than the sum of its proper divisors (501895635).

139025013889 is an equidigital number, since it uses as much as digits as its factorization.

139025013889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501895634.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 139025013889 in words is "one hundred thirty-nine billion, twenty-five million, thirteen thousand, eight hundred eighty-nine".