139868711 has 4 divisors (see below), whose sum is σ = 144691800. Its totient is φ = 135045624.

The previous prime is 139868699. The next prime is 139868717. The reversal of 139868711 is 117868931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117868931 = 1997 ⋅59023.

It is a cyclic number.

It is not a de Polignac number, because 139868711 - 2⁶ = 139868647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139868717) 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 in 3 ways as a sum of consecutive naturals, for example, 2411501 + ... + 2411558.

It is an arithmetic number, because the mean of its divisors is an integer number (36172950).

Almost surely, 2^139868711 is an apocalyptic number.

139868711 is a deficient number, since it is larger than the sum of its proper divisors (4823089).

139868711 is an equidigital number, since it uses as much as digits as its factorization.

139868711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823088.

The product of its digits is 72576, while the sum is 44.

The square root of 139868711 is about 11826.6102920490. The cubic root of 139868711 is about 519.0870457639.

The spelling of 139868711 in words is "one hundred thirty-nine million, eight hundred sixty-eight thousand, seven hundred eleven".