139383833891 has 2 divisors, whose sum is σ = 139383833892. Its totient is φ = 139383833890.

The previous prime is 139383833783. The next prime is 139383833903. The reversal of 139383833891 is 198338383931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139383833891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139383833891.

It is not a weakly prime, because it can be changed into another prime (139383833191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69691916945 + 69691916946.

It is an arithmetic number, because the mean of its divisors is an integer number (69691916946).

Almost surely, 2^139383833891 is an apocalyptic number.

139383833891 is a deficient number, since it is larger than the sum of its proper divisors (1).

139383833891 is an equidigital number, since it uses as much as digits as its factorization.

139383833891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 59.

The spelling of 139383833891 in words is "one hundred thirty-nine billion, three hundred eighty-three million, eight hundred thirty-three thousand, eight hundred ninety-one".