139110971 has 2 divisors, whose sum is σ = 139110972. Its totient is φ = 139110970.

The previous prime is 139110953. The next prime is 139110997. The reversal of 139110971 is 179011931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139110971 - 2¹⁴ = 139094587 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139110911) 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, 69555485 + 69555486.

It is an arithmetic number, because the mean of its divisors is an integer number (69555486).

Almost surely, 2^139110971 is an apocalyptic number.

139110971 is a deficient number, since it is larger than the sum of its proper divisors (1).

139110971 is an equidigital number, since it uses as much as digits as its factorization.

139110971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 32.

The square root of 139110971 is about 11794.5314023067. The cubic root of 139110971 is about 518.1479616379.

The spelling of 139110971 in words is "one hundred thirty-nine million, one hundred ten thousand, nine hundred seventy-one".