139304239091 has 2 divisors, whose sum is σ = 139304239092. Its totient is φ = 139304239090.

The previous prime is 139304239043. The next prime is 139304239093. The reversal of 139304239091 is 190932403931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139304239091 is a prime.

Together with 139304239093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139304239093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69652119545 + 69652119546.

It is an arithmetic number, because the mean of its divisors is an integer number (69652119546).

Almost surely, 2^139304239091 is an apocalyptic number.

139304239091 is a deficient number, since it is larger than the sum of its proper divisors (1).

139304239091 is an equidigital number, since it uses as much as digits as its factorization.

139304239091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 139304239091 in words is "one hundred thirty-nine billion, three hundred four million, two hundred thirty-nine thousand, ninety-one".