139880239789 has 2 divisors, whose sum is σ = 139880239790. Its totient is φ = 139880239788.

The previous prime is 139880239757. The next prime is 139880239799. The reversal of 139880239789 is 987932088931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121361656900 + 18518582889 = 348370^2 + 136083^2 .

It is a cyclic number.

It is not a de Polignac number, because 139880239789 - 2⁵ = 139880239757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139880239799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69940119894 + 69940119895.

It is an arithmetic number, because the mean of its divisors is an integer number (69940119895).

Almost surely, 2^139880239789 is an apocalyptic number.

It is an amenable number.

139880239789 is a deficient number, since it is larger than the sum of its proper divisors (1).

139880239789 is an equidigital number, since it uses as much as digits as its factorization.

139880239789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47029248, while the sum is 67.

The spelling of 139880239789 in words is "one hundred thirty-nine billion, eight hundred eighty million, two hundred thirty-nine thousand, seven hundred eighty-nine".