139090671 has 24 divisors (see below), whose sum is σ = 205695360. Its totient is φ = 90539856.

The previous prime is 139090669. The next prime is 139090687. The reversal of 139090671 is 176090931.

It is not a de Polignac number, because 139090671 - 2¹ = 139090669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139090631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85750 + ... + 87356.

It is an arithmetic number, because the mean of its divisors is an integer number (8570640).

Almost surely, 2^139090671 is an apocalyptic number.

139090671 is a deficient number, since it is larger than the sum of its proper divisors (66604689).

139090671 is a wasteful number, since it uses less digits than its factorization.

139090671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 139090671 is about 11793.6708025958. The cubic root of 139090671 is about 518.1227565439.

The spelling of 139090671 in words is "one hundred thirty-nine million, ninety thousand, six hundred seventy-one".