139703871 has 8 divisors (see below), whose sum is σ = 186337840. Its totient is φ = 93102912.

The previous prime is 139703867. The next prime is 139703873. The reversal of 139703871 is 178307931.

It is a happy number.

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

It is not a de Polignac number, because 139703871 - 2² = 139703867 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 (139703873) 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, 4395 + ... + 17283.

It is an arithmetic number, because the mean of its divisors is an integer number (23292230).

Almost surely, 2^139703871 is an apocalyptic number.

139703871 is a deficient number, since it is larger than the sum of its proper divisors (46633969).

139703871 is a wasteful number, since it uses less digits than its factorization.

139703871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16505.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 139703871 is about 11819.6392076916. The cubic root of 139703871 is about 518.8830450637.

The spelling of 139703871 in words is "one hundred thirty-nine million, seven hundred three thousand, eight hundred seventy-one".