139969601197 has 2 divisors, whose sum is σ = 139969601198. Its totient is φ = 139969601196.

The previous prime is 139969601183. The next prime is 139969601243. The reversal of 139969601197 is 791106969931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139921631721 + 47969476 = 374061^2 + 6926^2 .

It is an emirp because it is prime and its reverse (791106969931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139969601197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139969601117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69984800598 + 69984800599.

It is an arithmetic number, because the mean of its divisors is an integer number (69984800599).

Almost surely, 2^139969601197 is an apocalyptic number.

It is an amenable number.

139969601197 is a deficient number, since it is larger than the sum of its proper divisors (1).

139969601197 is an equidigital number, since it uses as much as digits as its factorization.

139969601197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4960116, while the sum is 61.

The spelling of 139969601197 in words is "one hundred thirty-nine billion, nine hundred sixty-nine million, six hundred one thousand, one hundred ninety-seven".