139019711 has 4 divisors (see below), whose sum is σ = 139392792. Its totient is φ = 138646632.

The previous prime is 139019681. The next prime is 139019723. The reversal of 139019711 is 117910931.

139019711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117910931 = 1301 ⋅90631.

It is a cyclic number.

It is not a de Polignac number, because 139019711 - 2¹⁴ = 139003327 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 (139019311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185981 + ... + 186726.

It is an arithmetic number, because the mean of its divisors is an integer number (34848198).

Almost surely, 2^139019711 is an apocalyptic number.

139019711 is a deficient number, since it is larger than the sum of its proper divisors (373081).

139019711 is an equidigital number, since it uses as much as digits as its factorization.

139019711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373080.

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

The square root of 139019711 is about 11790.6620255183. The cubic root of 139019711 is about 518.0346311874.

The spelling of 139019711 in words is "one hundred thirty-nine million, nineteen thousand, seven hundred eleven".