139834673 has 12 divisors (see below), whose sum is σ = 162051792. Its totient is φ = 119641920.

The previous prime is 139834637. The next prime is 139834679. The reversal of 139834673 is 376438931.

It is not a de Polignac number, because 139834673 - 2⁶ = 139834609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139834679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18815 + ... + 25172.

It is an arithmetic number, because the mean of its divisors is an integer number (13504316).

Almost surely, 2^139834673 is an apocalyptic number.

It is an amenable number.

139834673 is a deficient number, since it is larger than the sum of its proper divisors (22217119).

139834673 is a wasteful number, since it uses less digits than its factorization.

139834673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44032 (or 44015 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 139834673 is about 11825.1711615520. The cubic root of 139834673 is about 519.0449345626.

The spelling of 139834673 in words is "one hundred thirty-nine million, eight hundred thirty-four thousand, six hundred seventy-three".