139112791 has 2 divisors, whose sum is σ = 139112792. Its totient is φ = 139112790.

The previous prime is 139112773. The next prime is 139112801. The reversal of 139112791 is 197211931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139112791 - 2⁹ = 139112279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139112191) 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, 69556395 + 69556396.

It is an arithmetic number, because the mean of its divisors is an integer number (69556396).

Almost surely, 2^139112791 is an apocalyptic number.

139112791 is a deficient number, since it is larger than the sum of its proper divisors (1).

139112791 is an equidigital number, since it uses as much as digits as its factorization.

139112791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 34.

The square root of 139112791 is about 11794.6085564549. The cubic root of 139112791 is about 518.1502212852.

The spelling of 139112791 in words is "one hundred thirty-nine million, one hundred twelve thousand, seven hundred ninety-one".