139320171 has 12 divisors (see below), whose sum is σ = 201350448. Its totient is φ = 92829264.

The previous prime is 139320163. The next prime is 139320221. The reversal of 139320171 is 171023931.

139320171 is a `hidden beast` number, since 1 + 393 + 201 + 71 = 666.

It is not a de Polignac number, because 139320171 - 2³ = 139320163 is a prime.

It is a super-2 number, since 2×139320171² = 38820220094938482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139320101) 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, 21061 + ... + 26873.

It is an arithmetic number, because the mean of its divisors is an integer number (16779204).

Almost surely, 2^139320171 is an apocalyptic number.

139320171 is a deficient number, since it is larger than the sum of its proper divisors (62030277).

139320171 is a wasteful number, since it uses less digits than its factorization.

139320171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 139320171 is about 11803.3965874235. The cubic root of 139320171 is about 518.4075679586.

The spelling of 139320171 in words is "one hundred thirty-nine million, three hundred twenty thousand, one hundred seventy-one".