139719207 has 4 divisors (see below), whose sum is σ = 186292280. Its totient is φ = 93146136.

The previous prime is 139719157. The next prime is 139719211. The reversal of 139719207 is 702917931.

139719207 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: 702917931 = 3 ⋅234305977.

It is not a de Polignac number, because 139719207 - 2⁷ = 139719079 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 (139719247) 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, 23286532 + ... + 23286537.

It is an arithmetic number, because the mean of its divisors is an integer number (46573070).

Almost surely, 2^139719207 is an apocalyptic number.

139719207 is a deficient number, since it is larger than the sum of its proper divisors (46573073).

139719207 is an equidigital number, since it uses as much as digits as its factorization.

139719207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46573072.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 139719207 is about 11820.2879406553. The cubic root of 139719207 is about 518.9020311738.

The spelling of 139719207 in words is "one hundred thirty-nine million, seven hundred nineteen thousand, two hundred seven".