139714931 has 4 divisors (see below), whose sum is σ = 139906272. Its totient is φ = 139523592.

The previous prime is 139714889. The next prime is 139714933. The reversal of 139714931 is 139417931.

139714931 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.

It is a cyclic number.

It is not a de Polignac number, because 139714931 - 2⁶ = 139714867 is a prime.

It is a super-2 number, since 2×139714931² = 39040523888669522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139714933) 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, 94571 + ... + 96036.

It is an arithmetic number, because the mean of its divisors is an integer number (34976568).

Almost surely, 2^139714931 is an apocalyptic number.

139714931 is a deficient number, since it is larger than the sum of its proper divisors (191341).

139714931 is an equidigital number, since it uses as much as digits as its factorization.

139714931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191340.

The product of its digits is 20412, while the sum is 38.

The square root of 139714931 is about 11820.1070638129. The cubic root of 139714931 is about 518.8967375859.

The spelling of 139714931 in words is "one hundred thirty-nine million, seven hundred fourteen thousand, nine hundred thirty-one".