139447135 has 4 divisors (see below), whose sum is σ = 167336568. Its totient is φ = 111557704.

The previous prime is 139447067. The next prime is 139447177. The reversal of 139447135 is 531744931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531744931 = 2969 ⋅179099.

It is a cyclic number.

It is not a de Polignac number, because 139447135 - 2¹⁵ = 139414367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139447094 and 139447103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13944709 + ... + 13944718.

It is an arithmetic number, because the mean of its divisors is an integer number (41834142).

Almost surely, 2^139447135 is an apocalyptic number.

139447135 is a deficient number, since it is larger than the sum of its proper divisors (27889433).

139447135 is an equidigital number, since it uses as much as digits as its factorization.

139447135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27889432.

The product of its digits is 45360, while the sum is 37.

The square root of 139447135 is about 11808.7736450488. The cubic root of 139447135 is about 518.5649969804.

The spelling of 139447135 in words is "one hundred thirty-nine million, four hundred forty-seven thousand, one hundred thirty-five".