139088135 has 8 divisors (see below), whose sum is σ = 176723856. Its totient is φ = 104725120.

The previous prime is 139088119. The next prime is 139088137. The reversal of 139088135 is 531880931.

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

It is not a de Polignac number, because 139088135 - 2⁴ = 139088119 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 (139088137) 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, 818081 + ... + 818250.

It is an arithmetic number, because the mean of its divisors is an integer number (22090482).

Almost surely, 2^139088135 is an apocalyptic number.

139088135 is a deficient number, since it is larger than the sum of its proper divisors (37635721).

139088135 is a wasteful number, since it uses less digits than its factorization.

139088135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636353.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 139088135 is about 11793.5632868103. The cubic root of 139088135 is about 518.1196075973.

The spelling of 139088135 in words is "one hundred thirty-nine million, eighty-eight thousand, one hundred thirty-five".