139230871 has 8 divisors (see below), whose sum is σ = 150086160. Its totient is φ = 128396352.

The previous prime is 139230869. The next prime is 139230877. The reversal of 139230871 is 178032931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139230871 - 2¹ = 139230869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139230877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10515 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (18760770).

Almost surely, 2^139230871 is an apocalyptic number.

139230871 is a deficient number, since it is larger than the sum of its proper divisors (10855289).

139230871 is a wasteful number, since it uses less digits than its factorization.

139230871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 139230871 is about 11799.6131716256. The cubic root of 139230871 is about 518.2967831144.

The spelling of 139230871 in words is "one hundred thirty-nine million, two hundred thirty thousand, eight hundred seventy-one".