139672490917 has 2 divisors, whose sum is σ = 139672490918. Its totient is φ = 139672490916.

The previous prime is 139672490899. The next prime is 139672490953. The reversal of 139672490917 is 719094276931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127110788676 + 12561702241 = 356526^2 + 112079^2 .

It is an emirp because it is prime and its reverse (719094276931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139672490917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139672490117) 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 as a sum of consecutive naturals, namely, 69836245458 + 69836245459.

It is an arithmetic number, because the mean of its divisors is an integer number (69836245459).

Almost surely, 2^139672490917 is an apocalyptic number.

It is an amenable number.

139672490917 is a deficient number, since it is larger than the sum of its proper divisors (1).

139672490917 is an equidigital number, since it uses as much as digits as its factorization.

139672490917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The spelling of 139672490917 in words is "one hundred thirty-nine billion, six hundred seventy-two million, four hundred ninety thousand, nine hundred seventeen".