139082091 has 8 divisors (see below), whose sum is σ = 185498064. Its totient is φ = 92693760.

The previous prime is 139082077. The next prime is 139082129. The reversal of 139082091 is 190280931.

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

It is not a de Polignac number, because 139082091 - 2¹³ = 139073899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139082011) 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 7 ways as a sum of consecutive naturals, for example, 13171 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (23187258).

Almost surely, 2^139082091 is an apocalyptic number.

139082091 is a deficient number, since it is larger than the sum of its proper divisors (46415973).

139082091 is an equidigital number, since it uses as much as digits as its factorization.

139082091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13821.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 139082091 is about 11793.3070425560. The cubic root of 139082091 is about 518.1121026191.

The spelling of 139082091 in words is "one hundred thirty-nine million, eighty-two thousand, ninety-one".