139486449661879 has 2 divisors, whose sum is σ = 139486449661880. Its totient is φ = 139486449661878.

The previous prime is 139486449661843. The next prime is 139486449661943. The reversal of 139486449661879 is 978166944684931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139486449661879 - 2⁷ = 139486449661751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139486449661796 and 139486449661805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139486449661829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69743224830939 + 69743224830940.

It is an arithmetic number, because the mean of its divisors is an integer number (69743224830940).

Almost surely, 2^{139486449661879} is an apocalyptic number.

139486449661879 is a deficient number, since it is larger than the sum of its proper divisors (1).

139486449661879 is an equidigital number, since it uses as much as digits as its factorization.

139486449661879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13544423424, while the sum is 85.

The spelling of 139486449661879 in words is "one hundred thirty-nine trillion, four hundred eighty-six billion, four hundred forty-nine million, six hundred sixty-one thousand, eight hundred seventy-nine".