139712471 has 2 divisors, whose sum is σ = 139712472. Its totient is φ = 139712470.

The previous prime is 139712423. The next prime is 139712473. The reversal of 139712471 is 174217931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139712471 - 2¹⁰ = 139711447 is a prime.

It is a super-3 number, since 3×139712471³ (a number of 25 digits) contains 333 as substring.

Together with 139712473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139712473) 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, 69856235 + 69856236.

It is an arithmetic number, because the mean of its divisors is an integer number (69856236).

Almost surely, 2^139712471 is an apocalyptic number.

139712471 is a deficient number, since it is larger than the sum of its proper divisors (1).

139712471 is an equidigital number, since it uses as much as digits as its factorization.

139712471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 139712471 is about 11820.0030033837. The cubic root of 139712471 is about 518.8936921145.

The spelling of 139712471 in words is "one hundred thirty-nine million, seven hundred twelve thousand, four hundred seventy-one".