139714209 has 12 divisors (see below), whose sum is σ = 203808852. Its totient is φ = 92220000.

The previous prime is 139714151. The next prime is 139714219. The reversal of 139714209 is 902417931.

139714209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 128323584 + 11390625 = 11328^2 + 3375^2 .

It is not a de Polignac number, because 139714209 - 2⁸ = 139713953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139714219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75942 + ... + 77759.

It is an arithmetic number, because the mean of its divisors is an integer number (16984071).

Almost surely, 2^139714209 is an apocalyptic number.

It is an amenable number.

139714209 is a deficient number, since it is larger than the sum of its proper divisors (64094643).

139714209 is a wasteful number, since it uses less digits than its factorization.

139714209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153808 (or 153805 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 139714209 is about 11820.0765225949. The cubic root of 139714209 is about 518.8958437561.

The spelling of 139714209 in words is "one hundred thirty-nine million, seven hundred fourteen thousand, two hundred nine".