139171193 has 16 divisors (see below), whose sum is σ = 160966656. Its totient is φ = 117864720.

The previous prime is 139171189. The next prime is 139171199. The reversal of 139171193 is 391171931.

139171193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 139171193 - 2² = 139171189 is a prime.

It is a super-2 number, since 2×139171193² = 38737241922086498, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139171199) 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, 322688 + ... + 323118.

It is an arithmetic number, because the mean of its divisors is an integer number (10060416).

Almost surely, 2^139171193 is an apocalyptic number.

It is an amenable number.

139171193 is a deficient number, since it is larger than the sum of its proper divisors (21795463).

139171193 is a wasteful number, since it uses less digits than its factorization.

139171193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 5103, while the sum is 35.

The square root of 139171193 is about 11797.0840888755. The cubic root of 139171193 is about 518.2227206705. Note that the first 3 decimals are identical.

The spelling of 139171193 in words is "one hundred thirty-nine million, one hundred seventy-one thousand, one hundred ninety-three".