139708165 has 16 divisors (see below), whose sum is σ = 176002560. Its totient is φ = 106320960.

The previous prime is 139708157. The next prime is 139708169. The reversal of 139708165 is 561807931.

It is not a de Polignac number, because 139708165 - 2³ = 139708157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139708169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (11000160).

Almost surely, 2^139708165 is an apocalyptic number.

It is an amenable number.

139708165 is a deficient number, since it is larger than the sum of its proper divisors (36294395).

139708165 is a wasteful number, since it uses less digits than its factorization.

139708165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15372.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 139708165 is about 11819.8208531263. The cubic root of 139708165 is about 518.8883612156. Note that the first 3 decimals are identical.

The spelling of 139708165 in words is "one hundred thirty-nine million, seven hundred eight thousand, one hundred sixty-five".